325512820 has 24 divisors (see below), whose sum is σ = 707149800. Its totient is φ = 125715072.

The previous prime is 325512809. The next prime is 325512829. The reversal of 325512820 is 28215523.

It can be written as a sum of positive squares in 4 ways, for example, as 7033104 + 318479716 = 2652^2 + 17846^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325512829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 280035 + ... + 281194.

It is an arithmetic number, because the mean of its divisors is an integer number (29464575).

Almost surely, 2^325512820 is an apocalyptic number.

It is an amenable number.

325512820 is an abundant number, since it is smaller than the sum of its proper divisors (381636980).

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

325512820 is a wasteful number, since it uses less digits than its factorization.

325512820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561267 (or 561265 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 325512820 is about 18041.9738388016. The cubic root of 325512820 is about 687.8958654587.

The spelling of 325512820 in words is "three hundred twenty-five million, five hundred twelve thousand, eight hundred twenty".