325885621 has 2 divisors, whose sum is σ = 325885622. Its totient is φ = 325885620.

The previous prime is 325885619. The next prime is 325885627. The reversal of 325885621 is 126588523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307300900 + 18584721 = 17530^2 + 4311^2 .

It is an emirp because it is prime and its reverse (126588523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 325885621 - 2¹ = 325885619 is a prime.

Together with 325885619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325885627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162942810 + 162942811.

It is an arithmetic number, because the mean of its divisors is an integer number (162942811).

Almost surely, 2^325885621 is an apocalyptic number.

It is an amenable number.

325885621 is a deficient number, since it is larger than the sum of its proper divisors (1).

325885621 is an equidigital number, since it uses as much as digits as its factorization.

325885621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 40.

The square root of 325885621 is about 18052.3023739356. The cubic root of 325885621 is about 688.1583747589.

The spelling of 325885621 in words is "three hundred twenty-five million, eight hundred eighty-five thousand, six hundred twenty-one".