256259467 has 2 divisors, whose sum is σ = 256259468. Its totient is φ = 256259466.

The previous prime is 256259461. The next prime is 256259477. The reversal of 256259467 is 764952652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256259467 is a prime.

It is not a weakly prime, because it can be changed into another prime (256259461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128129733 + 128129734.

It is an arithmetic number, because the mean of its divisors is an integer number (128129734).

Almost surely, 2^256259467 is an apocalyptic number.

256259467 is a deficient number, since it is larger than the sum of its proper divisors (1).

256259467 is an equidigital number, since it uses as much as digits as its factorization.

256259467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 46.

The square root of 256259467 is about 16008.1062902518. The cubic root of 256259467 is about 635.1748682430.

The spelling of 256259467 in words is "two hundred fifty-six million, two hundred fifty-nine thousand, four hundred sixty-seven".