25860 has 24 divisors (see below), whose sum is σ = 72576. Its totient is φ = 6880.

The previous prime is 25849. The next prime is 25867. The reversal of 25860 is 6852.

It is a happy number.

25860 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

25860 is strictly pandigital in base 6.

It is not an unprimeable number, because it can be changed into a prime (25867) by changing a digit.

25860 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 156 + ... + 275.

It is an arithmetic number, because the mean of its divisors is an integer number (3024).

2²⁵⁸⁶⁰ is an apocalyptic number.

25860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25860 is an abundant number, since it is smaller than the sum of its proper divisors (46716).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36288).

25860 is a wasteful number, since it uses less digits than its factorization.

25860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25860 is about 160.8104474218. The cubic root of 25860 is about 29.5716919525.

The spelling of 25860 in words is "twenty-five thousand, eight hundred sixty".