251112242250 has 96 divisors (see below), whose sum is σ = 684354797568. Its totient is φ = 66435919200.

The previous prime is 251112242243. The next prime is 251112242263. The reversal of 251112242250 is 52242211152.

251112242250 is a `hidden beast` number, since 2 + 511 + 122 + 4 + 2 + 25 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153642 + ... + 725141.

It is an arithmetic number, because the mean of its divisors is an integer number (7128695808).

Almost surely, 2^251112242250 is an apocalyptic number.

251112242250 is an abundant number, since it is smaller than the sum of its proper divisors (433242555318).

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

251112242250 is a wasteful number, since it uses less digits than its factorization.

251112242250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878933 (or 878920 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 251112242250 in words is "two hundred fifty-one billion, one hundred twelve million, two hundred forty-two thousand, two hundred fifty".