256262266 has 16 divisors (see below), whose sum is σ = 419635944. Its totient is φ = 116653824.

The previous prime is 256262257. The next prime is 256262287. The reversal of 256262266 is 662262652.

It can be written as a sum of positive squares in 4 ways, for example, as 215238241 + 41024025 = 14671^2 + 6405^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65611 + ... + 69406.

Almost surely, 2^256262266 is an apocalyptic number.

256262266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256262266 is a deficient number, since it is larger than the sum of its proper divisors (163373678).

256262266 is a wasteful number, since it uses less digits than its factorization.

256262266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135105.

The product of its digits is 103680, while the sum is 37.

The square root of 256262266 is about 16008.1937144701. The cubic root of 256262266 is about 635.1771808053.

The spelling of 256262266 in words is "two hundred fifty-six million, two hundred sixty-two thousand, two hundred sixty-six".