Fatto matematico: 2522 is the number of subsets of {1,2,3,...,15} that have a sum divisible by 13.
Trivia: 2522 is an uninteresting number.
Data storica: November 26th is the day in 1476 that Vlad III Dracula defeats Basarab Laiota with the help of Stephen the Great and Stephen V Bathory and becomes the ruler of Wallachia for the third time.