25072591 has 2 divisors, whose sum is σ = 25072592. Its totient is φ = 25072590.

The previous prime is 25072589. The next prime is 25072601. The reversal of 25072591 is 19527052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25072591 - 2¹ = 25072589 is a prime.

Together with 25072589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25075591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12536295 + 12536296.

It is an arithmetic number, because the mean of its divisors is an integer number (12536296).

Almost surely, 2^25072591 is an apocalyptic number.

25072591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25072591 is an equidigital number, since it uses as much as digits as its factorization.

25072591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25072591 is about 5007.2538381832. The cubic root of 25072591 is about 292.6845101716.

The spelling of 25072591 in words is "twenty-five million, seventy-two thousand, five hundred ninety-one".