251335041255 has 48 divisors (see below), whose sum is σ = 440188167744. Its totient is φ = 132649574400.

The previous prime is 251335041169. The next prime is 251335041313. The reversal of 251335041255 is 552140533152.

251335041255 is a `hidden beast` number, since 2 + 5 + 13 + 350 + 41 + 255 = 666.

251335041255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 251335041255 - 2²² = 251330846951 is a prime.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 9472167 + ... + 9498663.

It is an arithmetic number, because the mean of its divisors is an integer number (9170586828).

Almost surely, 2^251335041255 is an apocalyptic number.

251335041255 is a deficient number, since it is larger than the sum of its proper divisors (188853126489).

251335041255 is a wasteful number, since it uses less digits than its factorization.

251335041255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28696 (or 28693 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 251335041255 in words is "two hundred fifty-one billion, three hundred thirty-five million, forty-one thousand, two hundred fifty-five".