325021 has 2 divisors, whose sum is σ = 325022. Its totient is φ = 325020.

The previous prime is 325019. The next prime is 325027. The reversal of 325021 is 120523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 121 = 570^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 325021 - 2¹ = 325019 is a prime.

Together with 325019, it forms a pair of twin primes.

It is an Ulam number.

325021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 324992 and 325010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162510 + 162511.

It is an arithmetic number, because the mean of its divisors is an integer number (162511).

2³²⁵⁰²¹ is an apocalyptic number.

It is an amenable number.

325021 is a deficient number, since it is larger than the sum of its proper divisors (1).

325021 is an equidigital number, since it uses as much as digits as its factorization.

325021 is an evil number, because the sum of its binary digits is even.

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

The square root of 325021 is about 570.1061304705. The cubic root of 325021 is about 68.7549241652.

Adding to 325021 its reverse (120523), we get a palindrome (445544).

The spelling of 325021 in words is "three hundred twenty-five thousand, twenty-one".