228525 has 24 divisors (see below), whose sum is σ = 413664. Its totient is φ = 110400.

The previous prime is 228523. The next prime is 228539. The reversal of 228525 is 525822.

It is not a de Polignac number, because 228525 - 2¹ = 228523 is a prime.

228525 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 228495 and 228504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687 + ... + 963.

It is an arithmetic number, because the mean of its divisors is an integer number (17236).

2²²⁸⁵²⁵ is an apocalyptic number.

228525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228525 is a deficient number, since it is larger than the sum of its proper divisors (185139).

228525 is a wasteful number, since it uses less digits than its factorization.

228525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 296 counting only the distinct ones).

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

The square root of 228525 is about 478.0428851055. The cubic root of 228525 is about 61.1380016337.

The spelling of 228525 in words is "two hundred twenty-eight thousand, five hundred twenty-five".