255725775 has 48 divisors (see below), whose sum is σ = 471373600. Its totient is φ = 135924480.

The previous prime is 255725761. The next prime is 255725783. The reversal of 255725775 is 577527552.

255725775 is a `hidden beast` number, since 2 + 5 + 5 + 72 + 577 + 5 = 666.

It is not a de Polignac number, because 255725775 - 2⁶ = 255725711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 255725775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 308061 + ... + 308889.

Almost surely, 2^255725775 is an apocalyptic number.

255725775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255725775 is a deficient number, since it is larger than the sum of its proper divisors (215647825).

255725775 is a wasteful number, since it uses less digits than its factorization.

255725775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1294 counting only the distinct ones).

The product of its digits is 857500, while the sum is 45.

The square root of 255725775 is about 15991.4281726180. The cubic root of 255725775 is about 634.7336184031.

The spelling of 255725775 in words is "two hundred fifty-five million, seven hundred twenty-five thousand, seven hundred seventy-five".