25989916 has 24 divisors (see below), whose sum is σ = 47250000. Its totient is φ = 12493824.

The previous prime is 25989883. The next prime is 25989917. The reversal of 25989916 is 61998952.

It is a self number, because there is not a number n which added to its sum of digits gives 25989916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25989917) 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, 51835 + ... + 52333.

It is an arithmetic number, because the mean of its divisors is an integer number (1968750).

Almost surely, 2^25989916 is an apocalyptic number.

It is an amenable number.

25989916 is a deficient number, since it is larger than the sum of its proper divisors (21260084).

25989916 is a wasteful number, since it uses less digits than its factorization.

25989916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 979 counting only the distinct ones).

The product of its digits is 349920, while the sum is 49.

The square root of 25989916 is about 5098.0306001435. The cubic root of 25989916 is about 296.2113021313.

The spelling of 25989916 in words is "twenty-five million, nine hundred eighty-nine thousand, nine hundred sixteen".