25803 has 12 divisors (see below), whose sum is σ = 38688. Its totient is φ = 16560.

The previous prime is 25801. The next prime is 25819. The reversal of 25803 is 30852.

25803 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 25803 - 2¹ = 25801 is a prime.

25803 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (25801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 393 + ... + 453.

It is an arithmetic number, because the mean of its divisors is an integer number (3224).

2²⁵⁸⁰³ is an apocalyptic number.

25803 is a deficient number, since it is larger than the sum of its proper divisors (12885).

25803 is a wasteful number, since it uses less digits than its factorization.

25803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25803 is about 160.6331223627. The cubic root of 25803 is about 29.5499488949.

It can be divided in two parts, 25 and 803, that added together give a palindrome (828).

The spelling of 25803 in words is "twenty-five thousand, eight hundred three".