25964091 has 8 divisors (see below), whose sum is σ = 38465360. Its totient is φ = 17309376.

The previous prime is 25964063. The next prime is 25964093. The reversal of 25964091 is 19046952.

25964091 is a `hidden beast` number, since 2 + 5 + 9 + 640 + 9 + 1 = 666.

It is not a de Polignac number, because 25964091 - 2⁷ = 25963963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25964093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480790 + ... + 480843.

It is an arithmetic number, because the mean of its divisors is an integer number (4808170).

Almost surely, 2^25964091 is an apocalyptic number.

25964091 is a deficient number, since it is larger than the sum of its proper divisors (12501269).

25964091 is an equidigital number, since it uses as much as digits as its factorization.

25964091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961642 (or 961636 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 25964091 is about 5095.4971298196. The cubic root of 25964091 is about 296.1131590415.

The spelling of 25964091 in words is "twenty-five million, nine hundred sixty-four thousand, ninety-one".