25845 has 8 divisors (see below), whose sum is σ = 41376. Its totient is φ = 13776.

The previous prime is 25841. The next prime is 25847. The reversal of 25845 is 54852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25845 - 2² = 25841 is a prime.

It is a Curzon number.

25845 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847 + ... + 876.

It is an arithmetic number, because the mean of its divisors is an integer number (5172).

2²⁵⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

25845 is a deficient number, since it is larger than the sum of its proper divisors (15531).

25845 is a wasteful number, since it uses less digits than its factorization.

25845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its digits is 1600, while the sum is 24.

The square root of 25845 is about 160.7638018958. The cubic root of 25845 is about 29.5659731954.

It can be divided in two parts, 258 and 45, that added together give a palindrome (303).

The spelling of 25845 in words is "twenty-five thousand, eight hundred forty-five".