25172386804 has 12 divisors (see below), whose sum is σ = 44078114304. Its totient is φ = 12578639864.

The previous prime is 25172386801. The next prime is 25172386807. The reversal of 25172386804 is 40868327152.

It is an interprime number because it is at equal distance from previous prime (25172386801) and next prime (25172386807).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172386801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1880884 + ... + 1894219.

It is an arithmetic number, because the mean of its divisors is an integer number (3673176192).

Almost surely, 2^25172386804 is an apocalyptic number.

It is an amenable number.

25172386804 is a deficient number, since it is larger than the sum of its proper divisors (18905727500).

25172386804 is a wasteful number, since it uses less digits than its factorization.

25172386804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3776774 (or 3776772 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 25172386804 in words is "twenty-five billion, one hundred seventy-two million, three hundred eighty-six thousand, eight hundred four".