25850 has 24 divisors (see below), whose sum is σ = 53568. Its totient is φ = 9200.

The previous prime is 25849. The next prime is 25867. The reversal of 25850 is 5852.

25850 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

25850 is strictly pandigital in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 527 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (2232).

2²⁵⁸⁵⁰ is an apocalyptic number.

25850 is an abundant number, since it is smaller than the sum of its proper divisors (27718).

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 (26784).

25850 is a wasteful number, since it uses less digits than its factorization.

25850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 25850 is about 160.7793519081. The cubic root of 25850 is about 29.5678796936.

The spelling of 25850 in words is "twenty-five thousand, eight hundred fifty".