25556120 has 32 divisors (see below), whose sum is σ = 58907520. Its totient is φ = 9972480.

The previous prime is 25556119. The next prime is 25556129. The reversal of 25556120 is 2165552.

It is a self number, because there is not a number n which added to its sum of digits gives 25556120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25556129) 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, 6152 + ... + 9431.

It is an arithmetic number, because the mean of its divisors is an integer number (1840860).

Almost surely, 2^25556120 is an apocalyptic number.

25556120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25556120 is an abundant number, since it is smaller than the sum of its proper divisors (33351400).

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

25556120 is a wasteful number, since it uses less digits than its factorization.

25556120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15635 (or 15631 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25556120 is about 5055.3061232729. The cubic root of 25556120 is about 294.5540326489.

The spelling of 25556120 in words is "twenty-five million, five hundred fifty-six thousand, one hundred twenty".