25597423 has 2 divisors, whose sum is σ = 25597424. Its totient is φ = 25597422.

The previous prime is 25597421. The next prime is 25597441. The reversal of 25597423 is 32479552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25597423 - 2¹ = 25597421 is a prime.

Together with 25597421, 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 (25597421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12798711 + 12798712.

It is an arithmetic number, because the mean of its divisors is an integer number (12798712).

Almost surely, 2^25597423 is an apocalyptic number.

25597423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25597423 is an equidigital number, since it uses as much as digits as its factorization.

25597423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 25597423 is about 5059.3895876874. The cubic root of 25597423 is about 294.7126302373.

It can be divided in two parts, 25597 and 423, that multiplied together give a triangular number (10827531 = T₄₆₅₃).

The spelling of 25597423 in words is "twenty-five million, five hundred ninety-seven thousand, four hundred twenty-three".