251000512072 has 32 divisors (see below), whose sum is σ = 485891539200. Its totient is φ = 121430836800.

The previous prime is 251000512057. The next prime is 251000512079. The reversal of 251000512072 is 270215000152.

It is not an unprimeable number, because it can be changed into a prime (251000512079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398679 + ... + 1567897.

It is an arithmetic number, because the mean of its divisors is an integer number (15184110600).

Almost surely, 2^251000512072 is an apocalyptic number.

It is an amenable number.

251000512072 is a deficient number, since it is larger than the sum of its proper divisors (234891027128).

251000512072 is a wasteful number, since it uses less digits than its factorization.

251000512072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175237 (or 175233 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The spelling of 251000512072 in words is "two hundred fifty-one billion, five hundred twelve thousand, seventy-two".