25342591 has 2 divisors, whose sum is σ = 25342592. Its totient is φ = 25342590.

The previous prime is 25342579. The next prime is 25342613. The reversal of 25342591 is 19524352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25342591 - 2⁷ = 25342463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25342501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671295 + 12671296.

It is an arithmetic number, because the mean of its divisors is an integer number (12671296).

Almost surely, 2^25342591 is an apocalyptic number.

25342591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25342591 is an equidigital number, since it uses as much as digits as its factorization.

25342591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 25342591 is about 5034.1425287729. The cubic root of 25342591 is about 293.7313749471.

The spelling of 25342591 in words is "twenty-five million, three hundred forty-two thousand, five hundred ninety-one".