325345221 has 8 divisors (see below), whose sum is σ = 481992960. Its totient is φ = 216896796.

The previous prime is 325345199. The next prime is 325345243. The reversal of 325345221 is 122543523.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (325345199) and next prime (325345243).

It is not a de Polignac number, because 325345221 - 2⁹ = 325344709 is a prime.

It is a super-3 number, since 3×325345221³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 12049823 = 325345221 / (3 + 2 + 5 + 3 + 4 + 5 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325345261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6024885 + ... + 6024938.

It is an arithmetic number, because the mean of its divisors is an integer number (60249120).

Almost surely, 2^325345221 is an apocalyptic number.

It is an amenable number.

325345221 is a deficient number, since it is larger than the sum of its proper divisors (156647739).

325345221 is a wasteful number, since it uses less digits than its factorization.

325345221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12049832 (or 12049826 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 325345221 is about 18037.3285438837. The cubic root of 325345221 is about 687.7777846495. Note that the first 4 decimals are identical.

Adding to 325345221 its reverse (122543523), we get a palindrome (447888744).

The spelling of 325345221 in words is "three hundred twenty-five million, three hundred forty-five thousand, two hundred twenty-one".