30320213225 has 12 divisors (see below), whose sum is σ = 37871499804. Its totient is φ = 24079115520.

The previous prime is 30320213213. The next prime is 30320213227. The reversal of 30320213225 is 52231202303.

It can be written as a sum of positive squares in 6 ways, for example, as 896643136 + 29423570089 = 29944^2 + 171533^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30320213225 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30320213225.

It is not an unprimeable number, because it can be changed into a prime (30320213227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4422884 + ... + 4429733.

It is an arithmetic number, because the mean of its divisors is an integer number (3155958317).

Almost surely, 2^30320213225 is an apocalyptic number.

It is an amenable number.

30320213225 is a deficient number, since it is larger than the sum of its proper divisors (7551286579).

30320213225 is a wasteful number, since it uses less digits than its factorization.

30320213225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8852764 (or 8852759 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 30320213225 its reverse (52231202303), we get a palindrome (82551415528).

The spelling of 30320213225 in words is "thirty billion, three hundred twenty million, two hundred thirteen thousand, two hundred twenty-five".