256132637 has 2 divisors, whose sum is σ = 256132638. Its totient is φ = 256132636.

The previous prime is 256132627. The next prime is 256132649. The reversal of 256132637 is 736231652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174609796 + 81522841 = 13214^2 + 9029^2 .

It is a cyclic number.

It is not a de Polignac number, because 256132637 - 2⁴ = 256132621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256132597 and 256132606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256132627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128066318 + 128066319.

It is an arithmetic number, because the mean of its divisors is an integer number (128066319).

Almost surely, 2^256132637 is an apocalyptic number.

It is an amenable number.

256132637 is a deficient number, since it is larger than the sum of its proper divisors (1).

256132637 is an equidigital number, since it uses as much as digits as its factorization.

256132637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 256132637 is about 16004.1443695063. The cubic root of 256132637 is about 635.0700623296.

The spelling of 256132637 in words is "two hundred fifty-six million, one hundred thirty-two thousand, six hundred thirty-seven".