255164565 has 32 divisors (see below), whose sum is σ = 427262976. Its totient is φ = 129876480.

The previous prime is 255164563. The next prime is 255164573. The reversal of 255164565 is 565461552.

It is a happy number.

It is not a de Polignac number, because 255164565 - 2¹ = 255164563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255164561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30187 + ... + 37703.

It is an arithmetic number, because the mean of its divisors is an integer number (13351968).

Almost surely, 2^255164565 is an apocalyptic number.

It is an amenable number.

255164565 is a deficient number, since it is larger than the sum of its proper divisors (172098411).

255164565 is a wasteful number, since it uses less digits than its factorization.

255164565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629.

The product of its digits is 180000, while the sum is 39.

The square root of 255164565 is about 15973.8713216302. The cubic root of 255164565 is about 634.2689543106.

The spelling of 255164565 in words is "two hundred fifty-five million, one hundred sixty-four thousand, five hundred sixty-five".