28325 has 12 divisors (see below), whose sum is σ = 38688. Its totient is φ = 20400.

The previous prime is 28319. The next prime is 28349. The reversal of 28325 is 52382.

It is not a de Polignac number, because 28325 - 2⁴ = 28309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28297 and 28306.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28325.

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, 224 + ... + 326.

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

2²⁸³²⁵ is an apocalyptic number.

28325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28325 is a deficient number, since it is larger than the sum of its proper divisors (10363).

28325 is a wasteful number, since it uses less digits than its factorization.

28325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 119 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 28325 is about 168.3003267971. The cubic root of 28325 is about 30.4829251377.

It can be divided in two parts, 28 and 325, that added together give a palindrome (353).

The spelling of 28325 in words is "twenty-eight thousand, three hundred twenty-five".