25756870416 has 20 divisors (see below), whose sum is σ = 66538582032. Its totient is φ = 8585623456.

The previous prime is 25756870379. The next prime is 25756870427. The reversal of 25756870416 is 61407865752.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268300686 + ... + 268300781.

Almost surely, 2^25756870416 is an apocalyptic number.

It is an amenable number.

25756870416 is an abundant number, since it is smaller than the sum of its proper divisors (40781711616).

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

25756870416 is a wasteful number, since it uses less digits than its factorization.

25756870416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536601478 (or 536601472 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 25756870416 in words is "twenty-five billion, seven hundred fifty-six million, eight hundred seventy thousand, four hundred sixteen".