325985813 has 4 divisors (see below), whose sum is σ = 326085888. Its totient is φ = 325885740.

The previous prime is 325985809. The next prime is 325985861. The reversal of 325985813 is 318589523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 325985813 - 2² = 325985809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325985713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44981 + ... + 51722.

It is an arithmetic number, because the mean of its divisors is an integer number (81521472).

Almost surely, 2^325985813 is an apocalyptic number.

It is an amenable number.

325985813 is a deficient number, since it is larger than the sum of its proper divisors (100075).

325985813 is an equidigital number, since it uses as much as digits as its factorization.

325985813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100074.

The product of its digits is 259200, while the sum is 44.

The square root of 325985813 is about 18055.0772083644. The cubic root of 325985813 is about 688.2288912170.

The spelling of 325985813 in words is "three hundred twenty-five million, nine hundred eighty-five thousand, eight hundred thirteen".