251225344055 has 32 divisors (see below), whose sum is σ = 365696830080. Its totient is φ = 161738772480.

The previous prime is 251225344049. The next prime is 251225344079. The reversal of 251225344055 is 550443522152.

It is not a de Polignac number, because 251225344055 - 2⁶ = 251225343991 is a prime.

It is a super-2 number, since 2×251225344055² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272816 + ... + 759525.

It is an arithmetic number, because the mean of its divisors is an integer number (11428025940).

Almost surely, 2^251225344055 is an apocalyptic number.

251225344055 is a deficient number, since it is larger than the sum of its proper divisors (114471486025).

251225344055 is a wasteful number, since it uses less digits than its factorization.

251225344055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032779.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 251225344055 in words is "two hundred fifty-one billion, two hundred twenty-five million, three hundred forty-four thousand, fifty-five".