255633775 has 24 divisors (see below), whose sum is σ = 322635600. Its totient is φ = 200893440.

The previous prime is 255633773. The next prime is 255633803. The reversal of 255633775 is 577336552.

It is not a de Polignac number, because 255633775 - 2¹ = 255633773 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255633773) 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, 723999 + ... + 724351.

It is an arithmetic number, because the mean of its divisors is an integer number (13443150).

Almost surely, 2^255633775 is an apocalyptic number.

255633775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255633775 is a deficient number, since it is larger than the sum of its proper divisors (67001825).

255633775 is a wasteful number, since it uses less digits than its factorization.

255633775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 790 counting only the distinct ones).

The product of its digits is 661500, while the sum is 43.

The square root of 255633775 is about 15988.5513727792. The cubic root of 255633775 is about 634.6574919390.

The spelling of 255633775 in words is "two hundred fifty-five million, six hundred thirty-three thousand, seven hundred seventy-five".