228725 has 12 divisors (see below), whose sum is σ = 324384. Its totient is φ = 156720.

The previous prime is 228713. The next prime is 228731. The reversal of 228725 is 527822.

228725 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 228725 - 2⁸ = 228469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228694 and 228703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479 + ... + 828.

It is an arithmetic number, because the mean of its divisors is an integer number (27032).

2²²⁸⁷²⁵ is an apocalyptic number.

228725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228725 is a deficient number, since it is larger than the sum of its proper divisors (95659).

228725 is a wasteful number, since it uses less digits than its factorization.

228725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1319 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 228725 is about 478.2520256099. The cubic root of 228725 is about 61.1558319732.

It can be divided in two parts, 2287 and 25, that multiplied together give a palindrome (57175).

The spelling of 228725 in words is "two hundred twenty-eight thousand, seven hundred twenty-five".