255585858025 has 9 divisors (see below), whose sum is σ = 316929598423. Its totient is φ = 204466664200.

The previous prime is 255585858023. The next prime is 255585858061. The reversal of 255585858025 is 520858585552.

The square root of 255585858025 is 505555.

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

255585858025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 92010908889 + 163574949136 = 303333^2 + 404444^2 .

It is not a de Polignac number, because 255585858025 - 2¹ = 255585858023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255585858023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2477220 + ... + 2578330.

Almost surely, 2^255585858025 is an apocalyptic number.

255585858025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255585858025 is the 505555-th square number.

255585858025 is the 252778-th centered octagonal number.

It is an amenable number.

255585858025 is a deficient number, since it is larger than the sum of its proper divisors (61343740398).

255585858025 is an frugal number, since it uses more digits than its factorization.

255585858025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202232 (or 101116 counting only the distinct ones).

The product of its (nonzero) digits is 32000000, while the sum is 58.

The spelling of 255585858025 in words is "two hundred fifty-five billion, five hundred eighty-five million, eight hundred fifty-eight thousand, twenty-five".