25263751256 has 32 divisors (see below), whose sum is σ = 49567742640. Its totient is φ = 12058570368.

The previous prime is 25263751243. The next prime is 25263751291. The reversal of 25263751256 is 65215736252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789506 + ... + 820881.

Almost surely, 2^25263751256 is an apocalyptic number.

It is an amenable number.

25263751256 is a deficient number, since it is larger than the sum of its proper divisors (24303991384).

25263751256 is a wasteful number, since it uses less digits than its factorization.

25263751256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610483 (or 1610479 counting only the distinct ones).

The product of its digits is 756000, while the sum is 44.

The spelling of 25263751256 in words is "twenty-five billion, two hundred sixty-three million, seven hundred fifty-one thousand, two hundred fifty-six".