25355839 has 2 divisors, whose sum is σ = 25355840. Its totient is φ = 25355838.

The previous prime is 25355797. The next prime is 25355843. The reversal of 25355839 is 93855352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25355839 - 2⁷ = 25355711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25355849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12677919 + 12677920.

It is an arithmetic number, because the mean of its divisors is an integer number (12677920).

Almost surely, 2^25355839 is an apocalyptic number.

25355839 is a deficient number, since it is larger than the sum of its proper divisors (1).

25355839 is an equidigital number, since it uses as much as digits as its factorization.

25355839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

The square root of 25355839 is about 5035.4581718052. The cubic root of 25355839 is about 293.7825493432.

The spelling of 25355839 in words is "twenty-five million, three hundred fifty-five thousand, eight hundred thirty-nine".