256800259 has 2 divisors, whose sum is σ = 256800260. Its totient is φ = 256800258.

The previous prime is 256800253. The next prime is 256800319. The reversal of 256800259 is 952008652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256800259 - 2⁵ = 256800227 is a prime.

It is not a weakly prime, because it can be changed into another prime (256800253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128400129 + 128400130.

It is an arithmetic number, because the mean of its divisors is an integer number (128400130).

Almost surely, 2^256800259 is an apocalyptic number.

256800259 is a deficient number, since it is larger than the sum of its proper divisors (1).

256800259 is an equidigital number, since it uses as much as digits as its factorization.

256800259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 256800259 is about 16024.9885803391. The cubic root of 256800259 is about 635.6213637985.

The spelling of 256800259 in words is "two hundred fifty-six million, eight hundred thousand, two hundred fifty-nine".