25580839 has 2 divisors, whose sum is σ = 25580840. Its totient is φ = 25580838.

The previous prime is 25580833. The next prime is 25580881. The reversal of 25580839 is 93808552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25580839 - 2¹⁵ = 25548071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25580833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12790419 + 12790420.

It is an arithmetic number, because the mean of its divisors is an integer number (12790420).

Almost surely, 2^25580839 is an apocalyptic number.

25580839 is a deficient number, since it is larger than the sum of its proper divisors (1).

25580839 is an equidigital number, since it uses as much as digits as its factorization.

25580839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 25580839 is about 5057.7503892541. The cubic root of 25580839 is about 294.6489705720.

The spelling of 25580839 in words is "twenty-five million, five hundred eighty thousand, eight hundred thirty-nine".