Fait général: 2507 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2507 is an unremarkable number.
Culture générale: 2507 is an unremarkable number.
Date historique: November 11th is the day in 1865 that Treaty of Sinchula is signed by which Bhutan cedes the areas east of the Teesta River to the British East India Company.