1265075256 has 32 divisors (see below), whose sum is σ = 3300197760. Its totient is φ = 403357152.

The previous prime is 1265075221. The next prime is 1265075257. The reversal of 1265075256 is 6525705621.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265075257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1145350 + ... + 1146453.

It is an arithmetic number, because the mean of its divisors is an integer number (103131180).

Almost surely, 2^1265075256 is an apocalyptic number.

It is an amenable number.

1265075256 is an abundant number, since it is smaller than the sum of its proper divisors (2035122504).

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

1265075256 is a wasteful number, since it uses less digits than its factorization.

1265075256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291835 (or 2291831 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 1265075256 is about 35567.8964236009. The cubic root of 1265075256 is about 1081.5305391382.

The spelling of 1265075256 in words is "one billion, two hundred sixty-five million, seventy-five thousand, two hundred fifty-six".