25911167 has 2 divisors, whose sum is σ = 25911168. Its totient is φ = 25911166.

The previous prime is 25911163. The next prime is 25911169. The reversal of 25911167 is 76111952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25911167 - 2² = 25911163 is a prime.

Together with 25911169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25911161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12955583 + 12955584.

It is an arithmetic number, because the mean of its divisors is an integer number (12955584).

Almost surely, 2^25911167 is an apocalyptic number.

25911167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25911167 is an equidigital number, since it uses as much as digits as its factorization.

25911167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 25911167 is about 5090.3012680980. The cubic root of 25911167 is about 295.9118277372.

The spelling of 25911167 in words is "twenty-five million, nine hundred eleven thousand, one hundred sixty-seven".