25799560 has 64 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 9520896.

The previous prime is 25799551. The next prime is 25799561. The reversal of 25799560 is 6599752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25799561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26197 + ... + 27163.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^25799560 is an apocalyptic number.

25799560 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 25799560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31363200).

25799560 is an abundant number, since it is smaller than the sum of its proper divisors (36926840).

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

25799560 is a wasteful number, since it uses less digits than its factorization.

25799560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 25799560 is about 5079.3267270377. The cubic root of 25799560 is about 295.4863565820.

The spelling of 25799560 in words is "twenty-five million, seven hundred ninety-nine thousand, five hundred sixty".