325120221 has 24 divisors (see below), whose sum is σ = 487044480. Its totient is φ = 208819296.

The previous prime is 325120193. The next prime is 325120241. The reversal of 325120221 is 122021523.

325120221 is a `hidden beast` number, since 325 + 120 + 221 = 666.

It is not a de Polignac number, because 325120221 - 2¹⁴ = 325103837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 325120194 and 325120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325120241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29560 + ... + 39038.

It is an arithmetic number, because the mean of its divisors is an integer number (20293520).

Almost surely, 2^325120221 is an apocalyptic number.

It is an amenable number.

325120221 is a deficient number, since it is larger than the sum of its proper divisors (161924259).

325120221 is a wasteful number, since it uses less digits than its factorization.

325120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9625 (or 9622 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 325120221 is about 18031.0903996403. The cubic root of 325120221 is about 687.6191985498.

Adding to 325120221 its reverse (122021523), we get a palindrome (447141744).

The spelling of 325120221 in words is "three hundred twenty-five million, one hundred twenty thousand, two hundred twenty-one".