18425073172 has 18 divisors (see below), whose sum is σ = 35441618954. Its totient is φ = 8375033040.

The previous prime is 18425073133. The next prime is 18425073181. The reversal of 18425073172 is 27137052481.

It can be written as a sum of positive squares in only one way, i.e., 11916778896 + 6508294276 = 109164^2 + 80674^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19033683 + ... + 19034650.

Almost surely, 2^18425073172 is an apocalyptic number.

It is an amenable number.

18425073172 is a deficient number, since it is larger than the sum of its proper divisors (17016545782).

18425073172 is a wasteful number, since it uses less digits than its factorization.

18425073172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38068359 (or 38068346 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 18425073172 in words is "eighteen billion, four hundred twenty-five million, seventy-three thousand, one hundred seventy-two".