255575747025 has 27 divisors (see below), whose sum is σ = 457778142939. Its totient is φ = 136303020720.

The previous prime is 255575746901. The next prime is 255575747093. The reversal of 255575747025 is 520747575552.

The square root of 255575747025 is 505545.

It is a perfect power (a square), and thus also a powerful number.

255575747025 is a `hidden beast` number, since 2 + 5 + 5 + 575 + 7 + 47 + 0 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92007268929 + 163568478096 = 303327^2 + 404436^2 .

It is not a de Polignac number, because 255575747025 - 2¹³ = 255575738833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7566324 + ... + 7600026.

Almost surely, 2^255575747025 is an apocalyptic number.

255575747025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255575747025 is the 505545-th square number.

255575747025 is the 252773-rd centered octagonal number.

It is an amenable number.

255575747025 is a deficient number, since it is larger than the sum of its proper divisors (202202395914).

255575747025 is an frugal number, since it uses more digits than its factorization.

255575747025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67422 (or 33711 counting only the distinct ones).

The product of its (nonzero) digits is 17150000, while the sum is 54.

The spelling of 255575747025 in words is "two hundred fifty-five billion, five hundred seventy-five million, seven hundred forty-seven thousand, twenty-five".