255185855 has 8 divisors (see below), whose sum is σ = 314499552. Its totient is φ = 198631008.

The previous prime is 255185849. The next prime is 255185867. The reversal of 255185855 is 558581552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255185855 - 2⁴ = 255185839 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 7 ways as a sum of consecutive naturals, for example, 689507 + ... + 689876.

It is an arithmetic number, because the mean of its divisors is an integer number (39312444).

Almost surely, 2^255185855 is an apocalyptic number.

255185855 is a deficient number, since it is larger than the sum of its proper divisors (59313697).

255185855 is a wasteful number, since it uses less digits than its factorization.

255185855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379425.

The product of its digits is 400000, while the sum is 44.

The square root of 255185855 is about 15974.5377084910. The cubic root of 255185855 is about 634.2865941822.

The spelling of 255185855 in words is "two hundred fifty-five million, one hundred eighty-five thousand, eight hundred fifty-five".