25973839 has 2 divisors, whose sum is σ = 25973840. Its totient is φ = 25973838.

The previous prime is 25973813. The next prime is 25973851. The reversal of 25973839 is 93837952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25973839 - 2¹⁹ = 25449551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25973539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12986919 + 12986920.

It is an arithmetic number, because the mean of its divisors is an integer number (12986920).

Almost surely, 2^25973839 is an apocalyptic number.

25973839 is a deficient number, since it is larger than the sum of its proper divisors (1).

25973839 is an equidigital number, since it uses as much as digits as its factorization.

25973839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 25973839 is about 5096.4535708667. The cubic root of 25973839 is about 296.1502121380.

The spelling of 25973839 in words is "twenty-five million, nine hundred seventy-three thousand, eight hundred thirty-nine".