255566368 has 24 divisors (see below), whose sum is σ = 504438732. Its totient is φ = 127454976.

The previous prime is 255566323. The next prime is 255566383. The reversal of 255566368 is 863665552.

It can be written as a sum of positive squares in 2 ways, for example, as 254338704 + 1227664 = 15948^2 + 1108^2 .

It is a super-2 number, since 2×255566368² = 130628336905422848, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2646 + ... + 22762.

Almost surely, 2^255566368 is an apocalyptic number.

It is an amenable number.

255566368 is a deficient number, since it is larger than the sum of its proper divisors (248872364).

255566368 is a wasteful number, since it uses less digits than its factorization.

255566368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20524 (or 20516 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The square root of 255566368 is about 15986.4432567097. The cubic root of 255566368 is about 634.6017036427.

The spelling of 255566368 in words is "two hundred fifty-five million, five hundred sixty-six thousand, three hundred sixty-eight".