325115220 has 96 divisors (see below), whose sum is σ = 930787200. Its totient is φ = 84772864.

The previous prime is 325115183. The next prime is 325115221. The reversal of 325115220 is 22511523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325115221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571096 + ... + 571664.

It is an arithmetic number, because the mean of its divisors is an integer number (9695700).

Almost surely, 2^325115220 is an apocalyptic number.

325115220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325115220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465393600).

325115220 is an abundant number, since it is smaller than the sum of its proper divisors (605671980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325115220 is a wasteful number, since it uses less digits than its factorization.

325115220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 325115220 is about 18030.9517219696. The cubic root of 325115220 is about 687.6156728784.

Adding to 325115220 its reverse (22511523), we get a palindrome (347626743).

The spelling of 325115220 in words is "three hundred twenty-five million, one hundred fifteen thousand, two hundred twenty".