256582423 has 2 divisors, whose sum is σ = 256582424. Its totient is φ = 256582422.

The previous prime is 256582399. The next prime is 256582429. The reversal of 256582423 is 324285652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256582423 - 2²⁵ = 223027991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256582429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128291211 + 128291212.

It is an arithmetic number, because the mean of its divisors is an integer number (128291212).

Almost surely, 2^256582423 is an apocalyptic number.

256582423 is a deficient number, since it is larger than the sum of its proper divisors (1).

256582423 is an equidigital number, since it uses as much as digits as its factorization.

256582423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 37.

The square root of 256582423 is about 16018.1903784416. The cubic root of 256582423 is about 635.4415867411.

The spelling of 256582423 in words is "two hundred fifty-six million, five hundred eighty-two thousand, four hundred twenty-three".