256255804811 has 2 divisors, whose sum is σ = 256255804812. Its totient is φ = 256255804810.

The previous prime is 256255804789. The next prime is 256255804829. The reversal of 256255804811 is 118408552652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256255804811 - 2⁶ = 256255804747 is a prime.

It is not a weakly prime, because it can be changed into another prime (256255804111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128127902405 + 128127902406.

It is an arithmetic number, because the mean of its divisors is an integer number (128127902406).

Almost surely, 2^256255804811 is an apocalyptic number.

256255804811 is a deficient number, since it is larger than the sum of its proper divisors (1).

256255804811 is an equidigital number, since it uses as much as digits as its factorization.

256255804811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 256255804811 in words is "two hundred fifty-six billion, two hundred fifty-five million, eight hundred four thousand, eight hundred eleven".