Fatto matematico: 1275 is the smallest number so that it and its neighbors are products of two primes and the square of a prime.
Trivia: 1275 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: June 28th is the day in 1895 that Court of Private Land Claims rules James Reavis' claim to Barony of Arizona is "wholly fictitious and fraudulent".