25867420972 has 6 divisors (see below), whose sum is σ = 45267986708. Its totient is φ = 12933710484.

The previous prime is 25867420961. The next prime is 25867421003. The reversal of 25867420972 is 27902476852.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233427618 + ... + 3233427625.

Almost surely, 2^25867420972 is an apocalyptic number.

It is an amenable number.

25867420972 is a deficient number, since it is larger than the sum of its proper divisors (19400565736).

25867420972 is a wasteful number, since it uses less digits than its factorization.

25867420972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466855247 (or 6466855245 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

Adding to 25867420972 its product of nonzero digits (3386880), we get a palindrome (25870807852).

The spelling of 25867420972 in words is "twenty-five billion, eight hundred sixty-seven million, four hundred twenty thousand, nine hundred seventy-two".