25239943 has 2 divisors, whose sum is σ = 25239944. Its totient is φ = 25239942.

The previous prime is 25239937. The next prime is 25239953. The reversal of 25239943 is 34993252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25239943 - 2¹⁷ = 25108871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25239953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12619971 + 12619972.

It is an arithmetic number, because the mean of its divisors is an integer number (12619972).

Almost surely, 2^25239943 is an apocalyptic number.

25239943 is a deficient number, since it is larger than the sum of its proper divisors (1).

25239943 is an equidigital number, since it uses as much as digits as its factorization.

25239943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 37.

The square root of 25239943 is about 5023.9370019936. The cubic root of 25239943 is about 293.3342603563.

The spelling of 25239943 in words is "twenty-five million, two hundred thirty-nine thousand, nine hundred forty-three".