255671285 has 8 divisors (see below), whose sum is σ = 314288856. Its totient is φ = 199548160.

The previous prime is 255671261. The next prime is 255671303. The reversal of 255671285 is 582176552.

It can be written as a sum of positive squares in 4 ways, for example, as 6599761 + 249071524 = 2569^2 + 15782^2 .

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

It is not a de Polignac number, because 255671285 - 2¹⁴ = 255654901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon 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, 623384 + ... + 623793.

It is an arithmetic number, because the mean of its divisors is an integer number (39286107).

Almost surely, 2^255671285 is an apocalyptic number.

It is an amenable number.

255671285 is a deficient number, since it is larger than the sum of its proper divisors (58617571).

255671285 is a wasteful number, since it uses less digits than its factorization.

255671285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247223.

The product of its digits is 168000, while the sum is 41.

The square root of 255671285 is about 15989.7243565985. The cubic root of 255671285 is about 634.6885322273.

The spelling of 255671285 in words is "two hundred fifty-five million, six hundred seventy-one thousand, two hundred eighty-five".