25820463968 has 48 divisors (see below), whose sum is σ = 54779432400. Its totient is φ = 11909500416.

The previous prime is 25820463919. The next prime is 25820463971. The reversal of 25820463968 is 86936402852.

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, 657758 + ... + 695906.

It is an arithmetic number, because the mean of its divisors is an integer number (1141238175).

Almost surely, 2^25820463968 is an apocalyptic number.

It is an amenable number.

25820463968 is an abundant number, since it is smaller than the sum of its proper divisors (28958968432).

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

25820463968 is a wasteful number, since it uses less digits than its factorization.

25820463968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39799 (or 39791 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 25820463968 in words is "twenty-five billion, eight hundred twenty million, four hundred sixty-three thousand, nine hundred sixty-eight".