25567398396 has 36 divisors (see below), whose sum is σ = 64839246472. Its totient is φ = 8494701984.

The previous prime is 25567398377. The next prime is 25567398473. The reversal of 25567398396 is 69389376552.

25567398396 is a `hidden beast` number, since 2 + 5 + 567 + 39 + 8 + 39 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1145635 + ... + 1167738.

Almost surely, 2^25567398396 is an apocalyptic number.

It is an amenable number.

25567398396 is an abundant number, since it is smaller than the sum of its proper divisors (39271848076).

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

25567398396 is a wasteful number, since it uses less digits than its factorization.

25567398396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313690 (or 2313685 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 63.

The spelling of 25567398396 in words is "twenty-five billion, five hundred sixty-seven million, three hundred ninety-eight thousand, three hundred ninety-six".