251072012 has 36 divisors (see below), whose sum is σ = 456364440. Its totient is φ = 120843072.

The previous prime is 251072009. The next prime is 251072021. The reversal of 251072012 is 210270152.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613664 + ... + 614072.

It is an arithmetic number, because the mean of its divisors is an integer number (12676790).

Almost surely, 2^251072012 is an apocalyptic number.

It is an amenable number.

251072012 is a deficient number, since it is larger than the sum of its proper divisors (205292428).

251072012 is a wasteful number, since it uses less digits than its factorization.

251072012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 251072012 is about 15845.2520333379. The cubic root of 251072012 is about 630.8596746268.

The spelling of 251072012 in words is "two hundred fifty-one million, seventy-two thousand, twelve".