255816085 has 16 divisors (see below), whose sum is σ = 371471616. Its totient is φ = 165097728.

The previous prime is 255816083. The next prime is 255816089. The reversal of 255816085 is 580618552.

It is a cyclic number.

It is not a de Polignac number, because 255816085 - 2¹ = 255816083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255816083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214377 + ... + 215566.

It is an arithmetic number, because the mean of its divisors is an integer number (23216976).

Almost surely, 2^255816085 is an apocalyptic number.

It is an amenable number.

255816085 is a deficient number, since it is larger than the sum of its proper divisors (115655531).

255816085 is a wasteful number, since it uses less digits than its factorization.

255816085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429972.

The product of its (nonzero) digits is 96000, while the sum is 40.

The square root of 255816085 is about 15994.2516236303. The cubic root of 255816085 is about 634.8083287010.

The spelling of 255816085 in words is "two hundred fifty-five million, eight hundred sixteen thousand, eighty-five".