25629239 has 2 divisors, whose sum is σ = 25629240. Its totient is φ = 25629238.

The previous prime is 25629229. The next prime is 25629257. The reversal of 25629239 is 93292652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25629239 - 2⁸ = 25628983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25629209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12814619 + 12814620.

It is an arithmetic number, because the mean of its divisors is an integer number (12814620).

Almost surely, 2^25629239 is an apocalyptic number.

25629239 is a deficient number, since it is larger than the sum of its proper divisors (1).

25629239 is an equidigital number, since it uses as much as digits as its factorization.

25629239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 25629239 is about 5062.5328640909. The cubic root of 25629239 is about 294.8346828217.

The spelling of 25629239 in words is "twenty-five million, six hundred twenty-nine thousand, two hundred thirty-nine".