25640214604 has 24 divisors (see below), whose sum is σ = 45181655568. Its totient is φ = 12731473920.

The previous prime is 25640214583. The next prime is 25640214671. The reversal of 25640214604 is 40641204652.

It is a self number, because there is not a number n which added to its sum of digits gives 25640214604.

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, 302592 + ... + 377944.

It is an arithmetic number, because the mean of its divisors is an integer number (1882568982).

Almost surely, 2^25640214604 is an apocalyptic number.

It is an amenable number.

25640214604 is a deficient number, since it is larger than the sum of its proper divisors (19541440964).

25640214604 is a wasteful number, since it uses less digits than its factorization.

25640214604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75945 (or 75943 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 25640214604 in words is "twenty-five billion, six hundred forty million, two hundred fourteen thousand, six hundred four".