Fatto generale: 2510 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2510 is the maximum value of n so that there exist 6 denominations of stamps so that every postage from 1 to n can be paid for with at most 10 stamps.
Trivia: 2510 is an unremarkable number.
Data storica: November 14th is the day in 2007 that the last direct-current electrical distribution system in the United States is shut down in New York City by Con Edison.