25667625804 has 12 divisors (see below), whose sum is σ = 59891126904. Its totient is φ = 8555875264.

The previous prime is 25667625751. The next prime is 25667625817. The reversal of 25667625804 is 40852676652.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1069484397 + ... + 1069484420.

It is an arithmetic number, because the mean of its divisors is an integer number (4990927242).

Almost surely, 2^25667625804 is an apocalyptic number.

It is an amenable number.

25667625804 is an abundant number, since it is smaller than the sum of its proper divisors (34223501100).

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

25667625804 is a wasteful number, since it uses less digits than its factorization.

25667625804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138968824 (or 2138968822 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 25667625804 in words is "twenty-five billion, six hundred sixty-seven million, six hundred twenty-five thousand, eight hundred four".