255626281 has 4 divisors (see below), whose sum is σ = 255774352. Its totient is φ = 255478212.

The previous prime is 255626249. The next prime is 255626311. The reversal of 255626281 is 182626552.

255626281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255626281 - 2⁵ = 255626249 is a prime.

It is a super-2 number, since 2×255626281² = 130689591075781922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255626281.

It is not an unprimeable number, because it can be changed into a prime (255626381) 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, 71415 + ... + 74908.

It is an arithmetic number, because the mean of its divisors is an integer number (63943588).

Almost surely, 2^255626281 is an apocalyptic number.

It is an amenable number.

255626281 is a deficient number, since it is larger than the sum of its proper divisors (148071).

255626281 is a wasteful number, since it uses less digits than its factorization.

255626281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148070.

The product of its digits is 57600, while the sum is 37.

The square root of 255626281 is about 15988.3170158713. The cubic root of 255626281 is about 634.6512901375.

The spelling of 255626281 in words is "two hundred fifty-five million, six hundred twenty-six thousand, two hundred eighty-one".