25202042464 has 24 divisors (see below), whose sum is σ = 49757100120. Its totient is φ = 12565318656.

The previous prime is 25202042447. The next prime is 25202042501. The reversal of 25202042464 is 46424020252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104234 + ... + 1126825.

It is an arithmetic number, because the mean of its divisors is an integer number (2073212505).

Almost surely, 2^25202042464 is an apocalyptic number.

It is an amenable number.

25202042464 is a deficient number, since it is larger than the sum of its proper divisors (24555057656).

25202042464 is a wasteful number, since it uses less digits than its factorization.

25202042464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231422 (or 2231414 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The spelling of 25202042464 in words is "twenty-five billion, two hundred two million, forty-two thousand, four hundred sixty-four".