1265585250 has 64 divisors (see below), whose sum is σ = 3325196160. Its totient is φ = 319723200.

The previous prime is 1265585221. The next prime is 1265585263. The reversal of 1265585250 is 525855621.

1265585250 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1265585199 and 1265585208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30157 + ... + 58656.

It is an arithmetic number, because the mean of its divisors is an integer number (51956190).

Almost surely, 2^1265585250 is an apocalyptic number.

1265585250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265585250 is an abundant number, since it is smaller than the sum of its proper divisors (2059610910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265585250 is a wasteful number, since it uses less digits than its factorization.

1265585250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88852 (or 88842 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 39.

The square root of 1265585250 is about 35575.0650034543. The cubic root of 1265585250 is about 1081.6758532820.

The spelling of 1265585250 in words is "one billion, two hundred sixty-five million, five hundred eighty-five thousand, two hundred fifty".