25957319 has 2 divisors, whose sum is σ = 25957320. Its totient is φ = 25957318.

The previous prime is 25957289. The next prime is 25957367. The reversal of 25957319 is 91375952.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25957319 is a prime.

It is a super-2 number, since 2×25957319² = 1347564819335522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25957219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12978659 + 12978660.

It is an arithmetic number, because the mean of its divisors is an integer number (12978660).

Almost surely, 2^25957319 is an apocalyptic number.

25957319 is a deficient number, since it is larger than the sum of its proper divisors (1).

25957319 is an equidigital number, since it uses as much as digits as its factorization.

25957319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 41.

The square root of 25957319 is about 5094.8325782110. The cubic root of 25957319 is about 296.0874125508.

The spelling of 25957319 in words is "twenty-five million, nine hundred fifty-seven thousand, three hundred nineteen".