321225 has 12 divisors (see below), whose sum is σ = 531216. Its totient is φ = 171280.

The previous prime is 321221. The next prime is 321227. The reversal of 321225 is 522123.

It is not a de Polignac number, because 321225 - 2² = 321221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a d-powerful number, because it can be written as 3¹⁰ + 2 + 2² + 1 + 2¹⁸ + 5² .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321225.

It is not an unprimeable number, because it can be changed into a prime (321221) 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, 2067 + ... + 2216.

It is an arithmetic number, because the mean of its divisors is an integer number (44268).

2³²¹²²⁵ is an apocalyptic number.

It is an amenable number.

321225 is a deficient number, since it is larger than the sum of its proper divisors (209991).

321225 is a wasteful number, since it uses less digits than its factorization.

321225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296 (or 4291 counting only the distinct ones).

The product of its digits is 120, while the sum is 15.

The square root of 321225 is about 566.7671479541. The cubic root of 321225 is about 68.4862067527.

Adding to 321225 its reverse (522123), we get a palindrome (843348).

The spelling of 321225 in words is "three hundred twenty-one thousand, two hundred twenty-five".