25604167 has 2 divisors, whose sum is σ = 25604168. Its totient is φ = 25604166.

The previous prime is 25604147. The next prime is 25604179. The reversal of 25604167 is 76140652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25604167 - 2²³ = 17215559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25604147) 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, 12802083 + 12802084.

It is an arithmetic number, because the mean of its divisors is an integer number (12802084).

Almost surely, 2^25604167 is an apocalyptic number.

25604167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25604167 is an equidigital number, since it uses as much as digits as its factorization.

25604167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 25604167 is about 5060.0560273578. The cubic root of 25604167 is about 294.7385100229.

The spelling of 25604167 in words is "twenty-five million, six hundred four thousand, one hundred sixty-seven".