325251220 has 36 divisors (see below), whose sum is σ = 794544660. Its totient is φ = 111514368.

The previous prime is 325251197. The next prime is 325251263. The reversal of 325251220 is 22152523.

It can be written as a sum of positive squares in 2 ways, for example, as 46294416 + 278956804 = 6804^2 + 16702^2 .

It is a super-2 number, since 2×325251220² = 211576712222976800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 325251191 and 325251200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164965 + ... + 166924.

It is an arithmetic number, because the mean of its divisors is an integer number (22070685).

Almost surely, 2^325251220 is an apocalyptic number.

It is an amenable number.

325251220 is an abundant number, since it is smaller than the sum of its proper divisors (469293440).

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

325251220 is a wasteful number, since it uses less digits than its factorization.

325251220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331912 (or 331903 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 325251220 is about 18034.7226205451. The cubic root of 325251220 is about 687.7115390915.

The spelling of 325251220 in words is "three hundred twenty-five million, two hundred fifty-one thousand, two hundred twenty".