25089664 has 32 divisors (see below), whose sum is σ = 51603840. Its totient is φ = 12138240.

The previous prime is 25089661. The next prime is 25089679. The reversal of 25089664 is 46698052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (25089661) 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, 807 + ... + 7129.

It is an arithmetic number, because the mean of its divisors is an integer number (1612620).

Almost surely, 2^25089664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25089664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25801920).

25089664 is an abundant number, since it is smaller than the sum of its proper divisors (26514176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25089664 is an equidigital number, since it uses as much as digits as its factorization.

25089664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368 (or 6356 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 25089664 is about 5008.9583747522. The cubic root of 25089664 is about 292.7509289001.

The spelling of 25089664 in words is "twenty-five million, eighty-nine thousand, six hundred sixty-four".