255926561 has 8 divisors (see below), whose sum is σ = 293887200. Its totient is φ = 220415040.

The previous prime is 255926557. The next prime is 255926563. The reversal of 255926561 is 165629552.

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 255926561 - 2² = 255926557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255926563) 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, 612056 + ... + 612473.

It is an arithmetic number, because the mean of its divisors is an integer number (36735900).

Almost surely, 2^255926561 is an apocalyptic number.

It is an amenable number.

255926561 is a deficient number, since it is larger than the sum of its proper divisors (37960639).

255926561 is a wasteful number, since it uses less digits than its factorization.

255926561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224559.

The product of its digits is 162000, while the sum is 41.

The square root of 255926561 is about 15997.7048666363. The cubic root of 255926561 is about 634.8996977169.

The spelling of 255926561 in words is "two hundred fifty-five million, nine hundred twenty-six thousand, five hundred sixty-one".