253557265631 has 4 divisors (see below), whose sum is σ = 254694293952. Its totient is φ = 252420237312.

The previous prime is 253557265601. The next prime is 253557265669. The reversal of 253557265631 is 136562755352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253557265631 - 2⁶ = 253557265567 is a prime.

It is a super-2 number, since 2×253557265631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253557265631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253557265601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568513826 + ... + 568514271.

It is an arithmetic number, because the mean of its divisors is an integer number (63673573488).

Almost surely, 2^253557265631 is an apocalyptic number.

253557265631 is a deficient number, since it is larger than the sum of its proper divisors (1137028321).

253557265631 is a wasteful number, since it uses less digits than its factorization.

253557265631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137028320.

The product of its digits is 5670000, while the sum is 50.

The spelling of 253557265631 in words is "two hundred fifty-three billion, five hundred fifty-seven million, two hundred sixty-five thousand, six hundred thirty-one".