25439117 has 8 divisors (see below), whose sum is σ = 27788832. Its totient is φ = 23095600.

The previous prime is 25439111. The next prime is 25439149. The reversal of 25439117 is 71193452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25439117 - 2⁶ = 25439053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25439111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13142 + ... + 14952.

It is an arithmetic number, because the mean of its divisors is an integer number (3473604).

Almost surely, 2^25439117 is an apocalyptic number.

It is an amenable number.

25439117 is a deficient number, since it is larger than the sum of its proper divisors (2349715).

25439117 is a wasteful number, since it uses less digits than its factorization.

25439117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its digits is 7560, while the sum is 32.

The square root of 25439117 is about 5043.7205513391. The cubic root of 25439117 is about 294.1038282300.

The spelling of 25439117 in words is "twenty-five million, four hundred thirty-nine thousand, one hundred seventeen".