25439795 has 4 divisors (see below), whose sum is σ = 30527760. Its totient is φ = 20351832.

The previous prime is 25439761. The next prime is 25439851. The reversal of 25439795 is 59793452.

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 25439795 - 2⁸ = 25439539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2543975 + ... + 2543984.

It is an arithmetic number, because the mean of its divisors is an integer number (7631940).

Almost surely, 2^25439795 is an apocalyptic number.

25439795 is a deficient number, since it is larger than the sum of its proper divisors (5087965).

25439795 is an equidigital number, since it uses as much as digits as its factorization.

25439795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087964.

The product of its digits is 340200, while the sum is 44.

The square root of 25439795 is about 5043.7877631796. The cubic root of 25439795 is about 294.1064410123.

The spelling of 25439795 in words is "twenty-five million, four hundred thirty-nine thousand, seven hundred ninety-five".