25904320 has 84 divisors (see below), whose sum is σ = 66934080. Its totient is φ = 9544704.

The previous prime is 25904309. The next prime is 25904323. The reversal of 25904320 is 2340952.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25904323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53841 + ... + 54319.

Almost surely, 2^25904320 is an apocalyptic number.

25904320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25904320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33467040).

25904320 is an abundant number, since it is smaller than the sum of its proper divisors (41029760).

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

25904320 is a wasteful number, since it uses less digits than its factorization.

25904320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25904320 is about 5089.6286701487. The cubic root of 25904320 is about 295.8857606393.

The spelling of 25904320 in words is "twenty-five million, nine hundred four thousand, three hundred twenty".