25028140 has 24 divisors (see below), whose sum is σ = 54845280. Its totient is φ = 9575808.

The previous prime is 25028089. The next prime is 25028147. The reversal of 25028140 is 4182052.

It is not an unprimeable number, because it can be changed into a prime (25028147) 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, 26745 + ... + 27664.

It is an arithmetic number, because the mean of its divisors is an integer number (2285220).

Almost surely, 2^25028140 is an apocalyptic number.

25028140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25028140 is an abundant number, since it is smaller than the sum of its proper divisors (29817140).

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

25028140 is a wasteful number, since it uses less digits than its factorization.

25028140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54441 (or 54439 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 25028140 is about 5002.8132085857. The cubic root of 25028140 is about 292.5114418297.

The spelling of 25028140 in words is "twenty-five million, twenty-eight thousand, one hundred forty".