25328140 has 24 divisors (see below), whose sum is σ = 55989360. Its totient is φ = 9597888.

The previous prime is 25328137. The next prime is 25328141. The reversal of 25328140 is 4182352.

It is not an unprimeable number, because it can be changed into a prime (25328141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32947 + ... + 33706.

It is an arithmetic number, because the mean of its divisors is an integer number (2332890).

Almost surely, 2^25328140 is an apocalyptic number.

25328140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25328140 is an abundant number, since it is smaller than the sum of its proper divisors (30661220).

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

25328140 is a wasteful number, since it uses less digits than its factorization.

25328140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66681 (or 66679 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 25328140 is about 5032.7070250512. The cubic root of 25328140 is about 293.6755332592.

The spelling of 25328140 in words is "twenty-five million, three hundred twenty-eight thousand, one hundred forty".