255307585631 has 8 divisors (see below), whose sum is σ = 307136945280. Its totient is φ = 207317437848.

The previous prime is 255307585627. The next prime is 255307585667. The reversal of 255307585631 is 136585703552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255307585631 - 2² = 255307585627 is a prime.

It is a super-2 number, since 2×255307585631² (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 255307585631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255307585681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959802821 + ... + 959803086.

It is an arithmetic number, because the mean of its divisors is an integer number (38392118160).

Almost surely, 2^255307585631 is an apocalyptic number.

255307585631 is a deficient number, since it is larger than the sum of its proper divisors (51829359649).

255307585631 is a wasteful number, since it uses less digits than its factorization.

255307585631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919605933.

The product of its (nonzero) digits is 3780000, while the sum is 50.

The spelling of 255307585631 in words is "two hundred fifty-five billion, three hundred seven million, five hundred eighty-five thousand, six hundred thirty-one".