251224615056 has 80 divisors (see below), whose sum is σ = 654110009280. Its totient is φ = 83084359680.

The previous prime is 251224615013. The next prime is 251224615079. The reversal of 251224615056 is 650516422152.

251224615056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×251224615056² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3102735 + ... + 3182673.

It is an arithmetic number, because the mean of its divisors is an integer number (8176375116).

Almost surely, 2^251224615056 is an apocalyptic number.

It is an amenable number.

251224615056 is an abundant number, since it is smaller than the sum of its proper divisors (402885394224).

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

251224615056 is a wasteful number, since it uses less digits than its factorization.

251224615056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80464 (or 80458 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 251224615056 in words is "two hundred fifty-one billion, two hundred twenty-four million, six hundred fifteen thousand, fifty-six".