25256479 has 2 divisors, whose sum is σ = 25256480. Its totient is φ = 25256478.

The previous prime is 25256447. The next prime is 25256513. The reversal of 25256479 is 97465252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25256479 - 2⁵ = 25256447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25256879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628239 + 12628240.

It is an arithmetic number, because the mean of its divisors is an integer number (12628240).

Almost surely, 2^25256479 is an apocalyptic number.

25256479 is a deficient number, since it is larger than the sum of its proper divisors (1).

25256479 is an equidigital number, since it uses as much as digits as its factorization.

25256479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 25256479 is about 5025.5824538057. The cubic root of 25256479 is about 293.3983058843.

The spelling of 25256479 in words is "twenty-five million, two hundred fifty-six thousand, four hundred seventy-nine".