218325 has 24 divisors (see below), whose sum is σ = 374976. Its totient is φ = 112000.

The previous prime is 218287. The next prime is 218357. The reversal of 218325 is 523812.

It is not a de Polignac number, because 218325 - 2⁸ = 218069 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

Its product of digits (480) is a multiple of the sum of its prime divisors (120).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3040 + ... + 3110.

It is an arithmetic number, because the mean of its divisors is an integer number (15624).

2²¹⁸³²⁵ is an apocalyptic number.

218325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

218325 is a deficient number, since it is larger than the sum of its proper divisors (156651).

218325 is a wasteful number, since it uses less digits than its factorization.

218325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 120 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 218325 is about 467.2526083394. The cubic root of 218325 is about 60.2145099552.

The spelling of 218325 in words is "two hundred eighteen thousand, three hundred twenty-five".