256026751 has 2 divisors, whose sum is σ = 256026752. Its totient is φ = 256026750.

The previous prime is 256026713. The next prime is 256026763. The reversal of 256026751 is 157620652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256026751 - 2¹⁹ = 255502463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256026451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128013375 + 128013376.

It is an arithmetic number, because the mean of its divisors is an integer number (128013376).

Almost surely, 2^256026751 is an apocalyptic number.

256026751 is a deficient number, since it is larger than the sum of its proper divisors (1).

256026751 is an equidigital number, since it uses as much as digits as its factorization.

256026751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 256026751 is about 16000.8359469123. The cubic root of 256026751 is about 634.9825369782.

The spelling of 256026751 in words is "two hundred fifty-six million, twenty-six thousand, seven hundred fifty-one".