25425620 has 24 divisors (see below), whose sum is σ = 58248288. Its totient is φ = 9245600.

The previous prime is 25425581. The next prime is 25425671. The reversal of 25425620 is 2652452.

It is a self number, because there is not a number n which added to its sum of digits gives 25425620.

It is a congruent number.

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, 57566 + ... + 58005.

It is an arithmetic number, because the mean of its divisors is an integer number (2427012).

Almost surely, 2^25425620 is an apocalyptic number.

25425620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25425620 is an abundant number, since it is smaller than the sum of its proper divisors (32822668).

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

25425620 is a wasteful number, since it uses less digits than its factorization.

25425620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115591 (or 115589 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 25425620 is about 5042.3823734421. The cubic root of 25425620 is about 294.0518057010.

The spelling of 25425620 in words is "twenty-five million, four hundred twenty-five thousand, six hundred twenty".