255709755 has 24 divisors (see below), whose sum is σ = 506549472. Its totient is φ = 116895744.

The previous prime is 255709723. The next prime is 255709759. The reversal of 255709755 is 557907552.

255709755 is a `hidden beast` number, since 2 + 5 + 570 + 9 + 75 + 5 = 666.

It is not a de Polignac number, because 255709755 - 2⁵ = 255709723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 255709755.

It is not an unprimeable number, because it can be changed into a prime (255709759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405574 + ... + 406203.

It is an arithmetic number, because the mean of its divisors is an integer number (21106228).

Almost surely, 2^255709755 is an apocalyptic number.

255709755 is a deficient number, since it is larger than the sum of its proper divisors (250839717).

255709755 is a wasteful number, since it uses less digits than its factorization.

255709755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811795 (or 811792 counting only the distinct ones).

The product of its (nonzero) digits is 551250, while the sum is 45.

The square root of 255709755 is about 15990.9272714249. The cubic root of 255709755 is about 634.7203637818.

The spelling of 255709755 in words is "two hundred fifty-five million, seven hundred nine thousand, seven hundred fifty-five".