251380012 has 12 divisors (see below), whose sum is σ = 473754736. Its totient is φ = 116021520.

The previous prime is 251380009. The next prime is 251380039. The reversal of 251380012 is 210083152.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2417064 + ... + 2417167.

Almost surely, 2^251380012 is an apocalyptic number.

It is an amenable number.

251380012 is a deficient number, since it is larger than the sum of its proper divisors (222374724).

251380012 is a wasteful number, since it uses less digits than its factorization.

251380012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834248 (or 4834246 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 251380012 is about 15854.9680542094. The cubic root of 251380012 is about 631.1175360780.

The spelling of 251380012 in words is "two hundred fifty-one million, three hundred eighty thousand, twelve".