255456769 has 6 divisors (see below), whose sum is σ = 262549014. Its totient is φ = 248551200.

The previous prime is 255456763. The next prime is 255456809. The reversal of 255456769 is 967654552.

It can be written as a sum of positive squares in 3 ways, for example, as 181926144 + 73530625 = 13488^2 + 8575^2 .

It is not a de Polignac number, because 255456769 - 2²⁵ = 221902337 is a prime.

It is a super-2 number, since 2×255456769² = 130516321655838722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255456763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91932 + ... + 94669.

It is an arithmetic number, because the mean of its divisors is an integer number (43758169).

Almost surely, 2^255456769 is an apocalyptic number.

It is an amenable number.

255456769 is a deficient number, since it is larger than the sum of its proper divisors (7092245).

255456769 is an equidigital number, since it uses as much as digits as its factorization.

255456769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186675 (or 186638 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 49.

The square root of 255456769 is about 15983.0150159474. The cubic root of 255456769 is about 634.5109748855.

The spelling of 255456769 in words is "two hundred fifty-five million, four hundred fifty-six thousand, seven hundred sixty-nine".