255558085 has 4 divisors (see below), whose sum is σ = 306669708. Its totient is φ = 204446464.

The previous prime is 255558077. The next prime is 255558101. The reversal of 255558085 is 580855552.

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 78747876 + 176810209 = 8874^2 + 13297^2 .

It is a cyclic number.

It is not a de Polignac number, because 255558085 - 2³ = 255558077 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, 25555804 + ... + 25555813.

It is an arithmetic number, because the mean of its divisors is an integer number (76667427).

Almost surely, 2^255558085 is an apocalyptic number.

It is an amenable number.

255558085 is a deficient number, since it is larger than the sum of its proper divisors (51111623).

255558085 is an equidigital number, since it uses as much as digits as its factorization.

255558085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51111622.

The product of its (nonzero) digits is 400000, while the sum is 43.

The square root of 255558085 is about 15986.1841913572. The cubic root of 255558085 is about 634.5948476771.

The spelling of 255558085 in words is "two hundred fifty-five million, five hundred fifty-eight thousand, eighty-five".