25492591 has 2 divisors, whose sum is σ = 25492592. Its totient is φ = 25492590.

The previous prime is 25492573. The next prime is 25492609. The reversal of 25492591 is 19529452.

It is a balanced prime because it is at equal distance from previous prime (25492573) and next prime (25492609).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25492591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25492591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25492531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12746295 + 12746296.

It is an arithmetic number, because the mean of its divisors is an integer number (12746296).

Almost surely, 2^25492591 is an apocalyptic number.

25492591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25492591 is an equidigital number, since it uses as much as digits as its factorization.

25492591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The square root of 25492591 is about 5049.0188155720. The cubic root of 25492591 is about 294.3097565180.

The spelling of 25492591 in words is "twenty-five million, four hundred ninety-two thousand, five hundred ninety-one".