25318091 has 2 divisors, whose sum is σ = 25318092. Its totient is φ = 25318090.

The previous prime is 25318087. The next prime is 25318123. The reversal of 25318091 is 19081352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25318091 - 2² = 25318087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25318001) 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, 12659045 + 12659046.

It is an arithmetic number, because the mean of its divisors is an integer number (12659046).

Almost surely, 2^25318091 is an apocalyptic number.

25318091 is a deficient number, since it is larger than the sum of its proper divisors (1).

25318091 is an equidigital number, since it uses as much as digits as its factorization.

25318091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 25318091 is about 5031.7085567429. The cubic root of 25318091 is about 293.6366892987.

The spelling of 25318091 in words is "twenty-five million, three hundred eighteen thousand, ninety-one".