325772220 has 48 divisors (see below), whose sum is σ = 920253600. Its totient is φ = 86102016.

The previous prime is 325772203. The next prime is 325772263. The reversal of 325772220 is 22277523.

It is a super-2 number, since 2×325772220² = 212255078647456800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17245 + ... + 30804.

It is an arithmetic number, because the mean of its divisors is an integer number (19171950).

Almost surely, 2^325772220 is an apocalyptic number.

325772220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

325772220 is an abundant number, since it is smaller than the sum of its proper divisors (594481380).

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

325772220 is a wasteful number, since it uses less digits than its factorization.

325772220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48174 (or 48172 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 325772220 is about 18049.1611993466. The cubic root of 325772220 is about 688.0785441922.

The spelling of 325772220 in words is "three hundred twenty-five million, seven hundred seventy-two thousand, two hundred twenty".