255705957 has 24 divisors (see below), whose sum is σ = 410212800. Its totient is φ = 157354704.

The previous prime is 255705943. The next prime is 255706051. The reversal of 255705957 is 759507552.

255705957 is a `hidden beast` number, since 2 + 5 + 57 + 0 + 595 + 7 = 666.

It is not a de Polignac number, because 255705957 - 2¹² = 255701861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255705917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23457 + ... + 32582.

It is an arithmetic number, because the mean of its divisors is an integer number (17092200).

Almost surely, 2^255705957 is an apocalyptic number.

255705957 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

255705957 is a deficient number, since it is larger than the sum of its proper divisors (154506843).

255705957 is a wasteful number, since it uses less digits than its factorization.

255705957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56074 (or 56055 counting only the distinct ones).

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

The square root of 255705957 is about 15990.8085161445. The cubic root of 255705957 is about 634.7172213128.

The spelling of 255705957 in words is "two hundred fifty-five million, seven hundred five thousand, nine hundred fifty-seven".