25561088 has 48 divisors (see below), whose sum is σ = 58443840. Its totient is φ = 10948608.

The previous prime is 25561079. The next prime is 25561139. The reversal of 25561088 is 88016552.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13445 + ... + 15227.

It is an arithmetic number, because the mean of its divisors is an integer number (1217580).

Almost surely, 2^25561088 is an apocalyptic number.

25561088 is a gapful number since it is divisible by the number (28) 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 25561088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29221920).

25561088 is an abundant number, since it is smaller than the sum of its proper divisors (32882752).

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

25561088 is an equidigital number, since it uses as much as digits as its factorization.

25561088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 25561088 is about 5055.7974642978. The cubic root of 25561088 is about 294.5731180920.

The spelling of 25561088 in words is "twenty-five million, five hundred sixty-one thousand, eighty-eight".