25978616 has 16 divisors (see below), whose sum is σ = 49397040. Its totient is φ = 12806080.

The previous prime is 25978609. The next prime is 25978621. The reversal of 25978616 is 61687952.

It is a congruent number.

It is an unprimeable number.

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, 22301 + ... + 23436.

It is an arithmetic number, because the mean of its divisors is an integer number (3087315).

Almost surely, 2^25978616 is an apocalyptic number.

It is an amenable number.

25978616 is a deficient number, since it is larger than the sum of its proper divisors (23418424).

25978616 is a wasteful number, since it uses less digits than its factorization.

25978616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45814 (or 45810 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 25978616 is about 5096.9222085490. The cubic root of 25978616 is about 296.1683665952.

The spelling of 25978616 in words is "twenty-five million, nine hundred seventy-eight thousand, six hundred sixteen".