25655000 has 80 divisors (see below), whose sum is σ = 68790480. Its totient is φ = 8784000.

The previous prime is 25654987. The next prime is 25655017. The reversal of 25655000 is 55652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34634 + ... + 35366.

It is an arithmetic number, because the mean of its divisors is an integer number (859881).

Almost surely, 2^25655000 is an apocalyptic number.

25655000 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 25655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34395240).

25655000 is an abundant number, since it is smaller than the sum of its proper divisors (43135480).

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

25655000 is an equidigital number, since it uses as much as digits as its factorization.

25655000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25655000 is about 5065.0765048516. The cubic root of 25655000 is about 294.9334332232.

The spelling of 25655000 in words is "twenty-five million, six hundred fifty-five thousand".