25552900 has 72 divisors (see below), whose sum is σ = 58121280. Its totient is φ = 9744000.

The previous prime is 25552889. The next prime is 25552937. The reversal of 25552900 is 925552.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359865 + ... + 359935.

It is an arithmetic number, because the mean of its divisors is an integer number (807240).

Almost surely, 2^25552900 is an apocalyptic number.

25552900 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 25552900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29060640).

25552900 is an abundant number, since it is smaller than the sum of its proper divisors (32568380).

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

25552900 is a wasteful number, since it uses less digits than its factorization.

25552900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 25552900 is about 5054.9876359888. The cubic root of 25552900 is about 294.5416611332.

The spelling of 25552900 in words is "twenty-five million, five hundred fifty-two thousand, nine hundred".