255255881 has 4 divisors (see below), whose sum is σ = 256822032. Its totient is φ = 253689732.

The previous prime is 255255877. The next prime is 255255887. The reversal of 255255881 is 188552552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255255881 - 2² = 255255877 is a prime.

It is a super-2 number, since 2×255255881² = 130311129570172322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255255887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782831 + ... + 783156.

It is an arithmetic number, because the mean of its divisors is an integer number (64205508).

Almost surely, 2^255255881 is an apocalyptic number.

It is an amenable number.

255255881 is a deficient number, since it is larger than the sum of its proper divisors (1566151).

255255881 is a wasteful number, since it uses less digits than its factorization.

255255881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566150.

The product of its digits is 160000, while the sum is 41.

The square root of 255255881 is about 15976.7293586641. The cubic root of 255255881 is about 634.3446074433.

The spelling of 255255881 in words is "two hundred fifty-five million, two hundred fifty-five thousand, eight hundred eighty-one".