25256167 has 2 divisors, whose sum is σ = 25256168. Its totient is φ = 25256166.

The previous prime is 25256137. The next prime is 25256177. The reversal of 25256167 is 76165252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25256167 - 2⁷ = 25256039 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25256107) 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, 12628083 + 12628084.

It is an arithmetic number, because the mean of its divisors is an integer number (12628084).

Almost surely, 2^25256167 is an apocalyptic number.

25256167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25256167 is an equidigital number, since it uses as much as digits as its factorization.

25256167 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25256167 is about 5025.5514125318. The cubic root of 25256167 is about 293.3970977369.

The spelling of 25256167 in words is "twenty-five million, two hundred fifty-six thousand, one hundred sixty-seven".