25790839 has 4 divisors (see below), whose sum is σ = 26101656. Its totient is φ = 25480024.

The previous prime is 25790833. The next prime is 25790851. The reversal of 25790839 is 93809752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25790839 - 2⁷ = 25790711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25790795 and 25790804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25790833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155284 + ... + 155449.

It is an arithmetic number, because the mean of its divisors is an integer number (6525414).

Almost surely, 2^25790839 is an apocalyptic number.

25790839 is a deficient number, since it is larger than the sum of its proper divisors (310817).

25790839 is an equidigital number, since it uses as much as digits as its factorization.

25790839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310816.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 25790839 is about 5078.4681745582. The cubic root of 25790839 is about 295.4530585086.

The spelling of 25790839 in words is "twenty-five million, seven hundred ninety thousand, eight hundred thirty-nine".