325683521 has 2 divisors, whose sum is σ = 325683522. Its totient is φ = 325683520.

The previous prime is 325683517. The next prime is 325683529. The reversal of 325683521 is 125386523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294602896 + 31080625 = 17164^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 325683521 - 2² = 325683517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (325683529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162841760 + 162841761.

It is an arithmetic number, because the mean of its divisors is an integer number (162841761).

Almost surely, 2^325683521 is an apocalyptic number.

It is an amenable number.

325683521 is a deficient number, since it is larger than the sum of its proper divisors (1).

325683521 is an equidigital number, since it uses as much as digits as its factorization.

325683521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 325683521 is about 18046.7038818727. The cubic root of 325683521 is about 688.0160901062.

The spelling of 325683521 in words is "three hundred twenty-five million, six hundred eighty-three thousand, five hundred twenty-one".