25628320 has 48 divisors (see below), whose sum is σ = 62512128. Its totient is φ = 9918720.

The previous prime is 25628303. The next prime is 25628341. The reversal of 25628320 is 2382652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2377 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (1302336).

Almost surely, 2^25628320 is an apocalyptic number.

25628320 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 25628320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31256064).

25628320 is an abundant number, since it is smaller than the sum of its proper divisors (36883808).

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

25628320 is a wasteful number, since it uses less digits than its factorization.

25628320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213 (or 5205 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 25628320 is about 5062.4420984343. The cubic root of 25628320 is about 294.8311587697.

The spelling of 25628320 in words is "twenty-five million, six hundred twenty-eight thousand, three hundred twenty".