512225320 has 32 divisors (see below), whose sum is σ = 1159184520. Its totient is φ = 203703040.

The previous prime is 512225309. The next prime is 512225323. The reversal of 512225320 is 23522215.

It can be written as a sum of positive squares in 4 ways, for example, as 458730724 + 53494596 = 21418^2 + 7314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 512225291 and 512225300.

It is not an unprimeable number, because it can be changed into a prime (512225323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30091 + ... + 43930.

Almost surely, 2^512225320 is an apocalyptic number.

It is an amenable number.

512225320 is an abundant number, since it is smaller than the sum of its proper divisors (646959200).

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

512225320 is a wasteful number, since it uses less digits than its factorization.

512225320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74205 (or 74201 counting only the distinct ones).

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

The square root of 512225320 is about 22632.3953659351. The cubic root of 512225320 is about 800.1173369559.

Adding to 512225320 its reverse (23522215), we get a palindrome (535747535).

The spelling of 512225320 in words is "five hundred twelve million, two hundred twenty-five thousand, three hundred twenty".