7500

7500 is the natural number that comes after 7499 and before 7501. In mathematics it factors as 2^2 × 3 × 5^4, making it an even composite number.

In aviation, 7500 is the transponder or squawk code used to indicate a hijacking in progress. It is one of the standard emergency codes used in air traffic communications, alongside 7600 for radio communication failure and 7700 for a general emergency.

7500 is also the title of a 2019 thriller film directed by Patrick Vollrath. The film centers on a cockpit crew during a hijacking and stars Joseph Gordon-Levitt. It is presented with a real-time, single-location focus on the cockpit environment, and was released to audiences in 2019.