25800923868 has 48 divisors (see below), whose sum is σ = 63772367904. Its totient is φ = 8090736640.

The previous prime is 25800923843. The next prime is 25800923873. The reversal of 25800923868 is 86832900852.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 25800923868.

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, 441058 + ... + 496118.

It is an arithmetic number, because the mean of its divisors is an integer number (1328590998).

Almost surely, 2^25800923868 is an apocalyptic number.

It is an amenable number.

25800923868 is an abundant number, since it is smaller than the sum of its proper divisors (37971444036).

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

25800923868 is a wasteful number, since it uses less digits than its factorization.

25800923868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57382 (or 57380 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 25800923868 in words is "twenty-five billion, eight hundred million, nine hundred twenty-three thousand, eight hundred sixty-eight".