1256884025 has 12 divisors (see below), whose sum is σ = 1561804800. Its totient is φ = 1003398480.

The previous prime is 1256884007. The next prime is 1256884033. The reversal of 1256884025 is 5204886521.

It is a happy number.

It is not a de Polignac number, because 1256884025 - 2¹⁴ = 1256867641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40505 + ... + 64454.

It is an arithmetic number, because the mean of its divisors is an integer number (130150400).

Almost surely, 2^1256884025 is an apocalyptic number.

It is an amenable number.

1256884025 is a deficient number, since it is larger than the sum of its proper divisors (304920775).

1256884025 is a wasteful number, since it uses less digits than its factorization.

1256884025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105448 (or 105443 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 1256884025 is about 35452.5602037427. The cubic root of 1256884025 is about 1079.1912168917.

The spelling of 1256884025 in words is "one billion, two hundred fifty-six million, eight hundred eighty-four thousand, twenty-five".