321025 has 6 divisors (see below), whose sum is σ = 398102. Its totient is φ = 256800.

The previous prime is 321017. The next prime is 321031. The reversal of 321025 is 520123.

It can be written as a sum of positive squares in 3 ways, for example, as 17424 + 303601 = 132^2 + 551^2 .

It is not a de Polignac number, because 321025 - 2³ = 321017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320996 and 321014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6396 + ... + 6445.

2³²¹⁰²⁵ is an apocalyptic number.

It is an amenable number.

321025 is a deficient number, since it is larger than the sum of its proper divisors (77077).

321025 is a wasteful number, since it uses less digits than its factorization.

321025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12851 (or 12846 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 321025 is about 566.5906811800. The cubic root of 321025 is about 68.4719902533.

Adding to 321025 its reverse (520123), we get a palindrome (841148).

The spelling of 321025 in words is "three hundred twenty-one thousand, twenty-five".