25907919772 has 24 divisors (see below), whose sum is σ = 51820521984. Its totient is φ = 11102390832.

The previous prime is 25907919767. The next prime is 25907919773. The reversal of 25907919772 is 27791970952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25907919773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332313 + ... + 402799.

It is an arithmetic number, because the mean of its divisors is an integer number (2159188416).

Almost surely, 2^25907919772 is an apocalyptic number.

It is an amenable number.

25907919772 is an abundant number, since it is smaller than the sum of its proper divisors (25912602212).

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

25907919772 is a wasteful number, since it uses less digits than its factorization.

25907919772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83625 (or 83623 counting only the distinct ones).

The product of its (nonzero) digits is 5000940, while the sum is 58.

The spelling of 25907919772 in words is "twenty-five billion, nine hundred seven million, nine hundred nineteen thousand, seven hundred seventy-two".