256770751 has 2 divisors, whose sum is σ = 256770752. Its totient is φ = 256770750.

The previous prime is 256770721. The next prime is 256770757. The reversal of 256770751 is 157077652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256770751 - 2⁷ = 256770623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256770757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128385375 + 128385376.

It is an arithmetic number, because the mean of its divisors is an integer number (128385376).

Almost surely, 2^256770751 is an apocalyptic number.

256770751 is a deficient number, since it is larger than the sum of its proper divisors (1).

256770751 is an equidigital number, since it uses as much as digits as its factorization.

256770751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102900, while the sum is 40.

The square root of 256770751 is about 16024.0678668059. The cubic root of 256770751 is about 635.5970172062.

It can be divided in two parts, 25 and 6770751, that added together give a palindrome (6770776).

The spelling of 256770751 in words is "two hundred fifty-six million, seven hundred seventy thousand, seven hundred fifty-one".