25552580 has 12 divisors (see below), whose sum is σ = 53660460. Its totient is φ = 10221024.

The previous prime is 25552561. The next prime is 25552589. The reversal of 25552580 is 8525552.

It can be written as a sum of positive squares in 2 ways, for example, as 19945156 + 5607424 = 4466^2 + 2368^2 .

It is not an unprimeable number, because it can be changed into a prime (25552589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638795 + ... + 638834.

It is an arithmetic number, because the mean of its divisors is an integer number (4471705).

Almost surely, 2^25552580 is an apocalyptic number.

25552580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25552580 is an abundant number, since it is smaller than the sum of its proper divisors (28107880).

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

25552580 is a wasteful number, since it uses less digits than its factorization.

25552580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277638 (or 1277636 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 25552580 is about 5054.9559839825. The cubic root of 25552580 is about 294.5404316090.

The spelling of 25552580 in words is "twenty-five million, five hundred fifty-two thousand, five hundred eighty".