28425 has 12 divisors (see below), whose sum is σ = 47120. Its totient is φ = 15120.

The previous prime is 28411. The next prime is 28429. The reversal of 28425 is 52482.

28425 is nontrivially palindromic in base 11.

28425 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 28425 - 2⁴ = 28409 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 8³ + 4⁶ + 2¹² + 5⁶ .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (28429) 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, 115 + ... + 264.

2²⁸⁴²⁵ is an apocalyptic number.

28425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28425 is a deficient number, since it is larger than the sum of its proper divisors (18695).

28425 is a wasteful number, since it uses less digits than its factorization.

28425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 387 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 28425 is about 168.5971530009. The cubic root of 28425 is about 30.5187558203.

The spelling of 28425 in words is "twenty-eight thousand, four hundred twenty-five".