325660591 has 2 divisors, whose sum is σ = 325660592. Its totient is φ = 325660590.

The previous prime is 325660579. The next prime is 325660609. The reversal of 325660591 is 195066523.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 325660591 - 2¹⁵ = 325627823 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 325660591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325660501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162830295 + 162830296.

It is an arithmetic number, because the mean of its divisors is an integer number (162830296).

Almost surely, 2^325660591 is an apocalyptic number.

325660591 is a deficient number, since it is larger than the sum of its proper divisors (1).

325660591 is an equidigital number, since it uses as much as digits as its factorization.

325660591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 325660591 is about 18046.0685746231. The cubic root of 325660591 is about 687.9999429590. Note that the first 4 decimals are identical.

The spelling of 325660591 in words is "three hundred twenty-five million, six hundred sixty thousand, five hundred ninety-one".