25089620 has 48 divisors (see below), whose sum is σ = 56382480. Its totient is φ = 9345024.

The previous prime is 25089613. The next prime is 25089641. The reversal of 25089620 is 2698052.

It can be written as a sum of positive squares in 8 ways, for example, as 6461764 + 18627856 = 2542^2 + 4316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36722 + ... + 37398.

It is an arithmetic number, because the mean of its divisors is an integer number (1174635).

Almost surely, 2^25089620 is an apocalyptic number.

25089620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25089620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28191240).

25089620 is an abundant number, since it is smaller than the sum of its proper divisors (31292860).

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

25089620 is a wasteful number, since it uses less digits than its factorization.

25089620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 25089620 is about 5008.9539826195. The cubic root of 25089620 is about 292.7507577666.

The spelling of 25089620 in words is "twenty-five million, eighty-nine thousand, six hundred twenty".