25325891 has 4 divisors (see below), whose sum is σ = 25803792. Its totient is φ = 24847992.

The previous prime is 25325863. The next prime is 25325941. The reversal of 25325891 is 19852352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25325891 - 2²² = 21131587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25325491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238871 + ... + 238976.

It is an arithmetic number, because the mean of its divisors is an integer number (6450948).

Almost surely, 2^25325891 is an apocalyptic number.

25325891 is a deficient number, since it is larger than the sum of its proper divisors (477901).

25325891 is an equidigital number, since it uses as much as digits as its factorization.

25325891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477900.

The product of its digits is 21600, while the sum is 35.

The square root of 25325891 is about 5032.4835816920. The cubic root of 25325891 is about 293.6668407427. Note that the first 3 decimals are identical.

The spelling of 25325891 in words is "twenty-five million, three hundred twenty-five thousand, eight hundred ninety-one".