255308285 has 4 divisors (see below), whose sum is σ = 306369948. Its totient is φ = 204246624.

The previous prime is 255308267. The next prime is 255308299. The reversal of 255308285 is 582803552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179077924 + 76230361 = 13382^2 + 8731^2 .

It is a cyclic number.

It is not a de Polignac number, because 255308285 - 2¹⁶ = 255242749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25530824 + ... + 25530833.

It is an arithmetic number, because the mean of its divisors is an integer number (76592487).

Almost surely, 2^255308285 is an apocalyptic number.

It is an amenable number.

255308285 is a deficient number, since it is larger than the sum of its proper divisors (51061663).

255308285 is an equidigital number, since it uses as much as digits as its factorization.

255308285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061662.

The product of its (nonzero) digits is 96000, while the sum is 38.

The square root of 255308285 is about 15978.3692847549. The cubic root of 255308285 is about 634.3880147621.

The spelling of 255308285 in words is "two hundred fifty-five million, three hundred eight thousand, two hundred eighty-five".