25 (twenty-five) is the natural number following 24 and preceding 26.

It is a square number, being 5² = 5 × 5. It is the smallest square that is also a sum of two (non-zero) squares: 25 = 3² + 4². Hence it often appears in illustrations of the Pythagorean theorem.

25 is a centered octagonal number, a centered square number, and an automorphic number.

25 percent is equal to 1/4.

25 has an aliquot sum of 6 and number 6 is the first (or smallest) number to have an aliquot sequence that does not culminate in 0 through a prime. Twenty-five is the aliquot sum of three integers; 95, 119, and 143. Twenty-five is the second composite member of the 6-aliquot tree.

It is the smallest base 10 Friedman number as it can be expressed by its own numbers: 5².

It is also a Cullen number. 25 is the smallest pseudoprime satisfying the congruence 7ⁿ = 7 mod n.

25 is the smallest aspiring number — a composite non-sociable number whose aliquot sequence does not terminate.

According to the Shapiro inequality, 25 is the least odd integer n such that there exist Failed to parse (Missing texvc executable; please see math/README to configure.): x_1, x_2, \dots, x_n

Arun Jaitley (Hindi:अरुण जेटली ) (born 28 December 1952) is a prominent Indian politician and a member of the Bharatiya Janata Party (BJP), which is currently the largest Opposition party in India. He is the leader of opposition in the Rajya Sabha and has previously served as the Union Minister for commerce, industry, law and justice of the Government of India.

He was born to Kishen and Ratan Prabha Jaitley. Born to a lawyer father, he did his schooling at St. Xavier's School, New Delhi from 1969-70.^{[citation needed]} He graduated in Commerce from Shri Ram College of Commerce, New Delhi in 1973. He passed his Law degree from the Faculty of Law, University of Delhi, in 1977. During his career as a student, he was the recipient of several distinctions for his outstanding performances both in academics and extra curricular activities. He was President of the Students Union of Delhi University in 1974.

Jaitley was an Akhil Bharatiya Vidyarthi Parishad (ABVP) student leader in the Delhi University Campus in the seventies and rose to be President of the University Students' Union in 1974. During the period of proclamation of Internal Emergency (1975–77) when civil liberties were suspended, he was under preventive detention for a period of 19 months. He was a prominent leader of a movement against corruption launched in the year 1973 by Raj Narain and Jai Prakash Narayan. He was the Convenor of the National Committee for Students and Youth organisation appointed by Jai Prakash Narayan. He was also active in civil rights movement and helped found PUCL Bulletin along with Satish Jha and Smitu Kothari. After being released from jail he joined Jan Sangh.

Christopher Edward Martin (born March 21, 1966), better known by his stage name DJ Premier (also known as Preem, Premo, or Primo for short), is an American record producer and DJ, and was the instrumental half of the hip hop duo Gang Starr, together with emcee Guru. Born in Houston and raised in Prairie View, Texas, he has lived in Brooklyn, New York, for much of his professional career. Rolling Stone identified Premier as arguably Hip-Hop's greatest producer of all time.

The Source named DJ Premier one of the five greatest producers in hip-hop history, while the editors of About.com ranked him #1 on their Top 50 Hip-Hop Producers list. He also made the "Finals" in the search for The Greatest Hip-Hop Producer of All Time by Vibe. He attended Prairie View A&M University.

Premier is known for producing all of Gang Starr's songs as well as many of the Gang Starr Foundation's songs. His work also includes production for heavyweight rappers such as (alphabetic order) Apathy, Big L, Bun B, Canibus, D.I.T.C., Fat Joe, Game, Jay-Z, Kanye West, KRS-One, Lord Finesse, M.O.P., Mos Def, Nas, Rakim, Royce Da 5'9", The LOX, The Notorious B.I.G., Snoop Dogg, Xzibit, rock band Limp Bizkit, Big L, Big Daddy Kane, Ill Bill, Joell Ortiz, and pop/R&B singer Christina Aguilera, among many others.

Parineeti Chopra (born 22 October 1988) is an Indian actress who was introduced to Bollywood by director Maneesh Sharma who helped her in appearing in Hindi films. In 2011, she was signed by Aditya Chopra for a three-film contract with Yash Raj Films and made her screen debut in Maneesh Sharma's Ladies VS Ricky Bahl. She won the Filmfare Award for Best Female Debut and was nominated for Filmfare Award for Best Supporting Actress. In 2012, she received critical and commercial success for Ishaqzaade.

Parineeti Chopra was born on 22 October 1988 in Ambala, Haryana, in a Punjabi family to Pawan Chopra and Reena Chopra. She is the cousin of actress Priyanka Chopra. Parineeti Chopra did her schooling from Convent of Jesus and Mary, Ambala. She later joined Manchester Business School, UK to study Finance and Economics. She went to Mumbai and joined as a Marketing & PR consultant at Yash Raj Films since 2009 until she auditioned for movie roles and bagged Ladies VS Ricky Bahl and Ishaqzaade.

Bipasha Basu (born 7 January 1979) is an Indian actress who appears in Hindi language films. She has also worked in Telugu, Bengali and Tamil language films. She is a former model who had a successful modeling career before venturing into films.

She debuted in a negative role in Ajnabee (2001) which earned her the Filmfare Award for Best Female Debut. Her first commercial success was Raaz (2002). She was then noticed for her bold role in the erotic thriller film, Jism (2003). She starred in top grossing films like 2005's biggest hit – No Entry, Phir Hera Pheri (2006), Dhoom 2 (2006) – her biggest commercial success till date and Race (2008). Her performances in Apharan (2005), Corporate (2006), Bachna Ae Haseeno (2008) and Lamhaa (2010) won her multiple nominations for several awards. She is frequented in the media as a "sex symbol".

She has been nominated for the Filmfare Award for Best Actress and the Filmfare Award for Best Supporting Actress twice each along with one nomination for the Filmfare Award for Best Performance in a Negative Role. Roles apart, she is also renowned for her item songs like "Phoonk De" in No Smoking (2007), and "Beedi" and "Namak Ishq Ka" in Omkara (2006). Basu is slated to make her international film debut with the 2012 Australian film Singularity.