251225373714172 has 96 divisors (see below), whose sum is σ = 517637905634304. Its totient is φ = 105178317388800.

The previous prime is 251225373714163. The next prime is 251225373714209. The reversal of 251225373714172 is 271417373522152.

It is a super-2 number, since 2×251225373714172² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574521897 + ... + 574959007.

It is an arithmetic number, because the mean of its divisors is an integer number (5392061517024).

Almost surely, 2^{251225373714172} is an apocalyptic number.

251225373714172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

251225373714172 is an abundant number, since it is smaller than the sum of its proper divisors (266412531920132).

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

251225373714172 is a wasteful number, since it uses less digits than its factorization.

251225373714172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439339 (or 439337 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 52.

The spelling of 251225373714172 in words is "two hundred fifty-one trillion, two hundred twenty-five billion, three hundred seventy-three million, seven hundred fourteen thousand, one hundred seventy-two".