25770865688 has 64 divisors (see below), whose sum is σ = 53365632000. Its totient is φ = 11619676800.

The previous prime is 25770865667. The next prime is 25770865693. The reversal of 25770865688 is 88656807752.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 25770865688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242603 + ... + 332261.

It is an arithmetic number, because the mean of its divisors is an integer number (833838000).

Almost surely, 2^25770865688 is an apocalyptic number.

It is an amenable number.

25770865688 is an abundant number, since it is smaller than the sum of its proper divisors (27594766312).

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

25770865688 is a wasteful number, since it uses less digits than its factorization.

25770865688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89776 (or 89772 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 25770865688 in words is "twenty-five billion, seven hundred seventy million, eight hundred sixty-five thousand, six hundred eighty-eight".