251241144255 has 32 divisors (see below), whose sum is σ = 446770334400. Its totient is φ = 133959453696.

The previous prime is 251241144241. The next prime is 251241144293. The reversal of 251241144255 is 552441142152.

251241144255 is a `hidden beast` number, since 2 + 512 + 4 + 114 + 4 + 25 + 5 = 666.

It is not a de Polignac number, because 251241144255 - 2⁸ = 251241143999 is a prime.

It is a super-2 number, since 2×251241144255² (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, 261927 + ... + 755703.

It is an arithmetic number, because the mean of its divisors is an integer number (13961572950).

Almost surely, 2^251241144255 is an apocalyptic number.

251241144255 is a deficient number, since it is larger than the sum of its proper divisors (195529190145).

251241144255 is a wasteful number, since it uses less digits than its factorization.

251241144255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497560 (or 497554 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The spelling of 251241144255 in words is "two hundred fifty-one billion, two hundred forty-one million, one hundred forty-four thousand, two hundred fifty-five".