25089791 has 2 divisors, whose sum is σ = 25089792. Its totient is φ = 25089790.

The previous prime is 25089781. The next prime is 25089793. The reversal of 25089791 is 19798052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25089791 is a prime.

It is a super-2 number, since 2×25089791² = 1258995224847362, which contains 22 as substring.

Together with 25089793, 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 (25089793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12544895 + 12544896.

It is an arithmetic number, because the mean of its divisors is an integer number (12544896).

Almost surely, 2^25089791 is an apocalyptic number.

25089791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25089791 is an equidigital number, since it uses as much as digits as its factorization.

25089791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 25089791 is about 5008.9710520226. The cubic root of 25089791 is about 292.7514228526.

The spelling of 25089791 in words is "twenty-five million, eighty-nine thousand, seven hundred ninety-one".