325355021 has 2 divisors, whose sum is σ = 325355022. Its totient is φ = 325355020.

The previous prime is 325355011. The next prime is 325355039. The reversal of 325355021 is 120553523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163072900 + 162282121 = 12770^2 + 12739^2 .

It is an emirp because it is prime and its reverse (120553523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 325355021 - 2⁶ = 325354957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325355011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162677510 + 162677511.

It is an arithmetic number, because the mean of its divisors is an integer number (162677511).

Almost surely, 2^325355021 is an apocalyptic number.

It is an amenable number.

325355021 is a deficient number, since it is larger than the sum of its proper divisors (1).

325355021 is an equidigital number, since it uses as much as digits as its factorization.

325355021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 325355021 is about 18037.6002006919. The cubic root of 325355021 is about 687.7846902933.

The spelling of 325355021 in words is "three hundred twenty-five million, three hundred fifty-five thousand, twenty-one".