25328040 has 32 divisors (see below), whose sum is σ = 75984480. Its totient is φ = 6754112.

The previous prime is 25328033. The next prime is 25328041. The reversal of 25328040 is 4082352.

It is a super-2 number, since 2×25328040² = 1283019220483200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25328040.

It is not an unprimeable number, because it can be changed into a prime (25328041) 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, 105414 + ... + 105653.

It is an arithmetic number, because the mean of its divisors is an integer number (2374515).

Almost surely, 2^25328040 is an apocalyptic number.

25328040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25328040 is an abundant number, since it is smaller than the sum of its proper divisors (50656440).

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

25328040 is a wasteful number, since it uses less digits than its factorization.

25328040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211081 (or 211077 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25328040 is about 5032.6970900304. The cubic root of 25328040 is about 293.6751467643.

The spelling of 25328040 in words is "twenty-five million, three hundred twenty-eight thousand, forty".