1230320225 has 6 divisors (see below), whose sum is σ = 1525597110. Its totient is φ = 984256160.

The previous prime is 1230320191. The next prime is 1230320233. The reversal of 1230320225 is 5220230321.

It can be written as a sum of positive squares in 3 ways, for example, as 2798929 + 1227521296 = 1673^2 + 35036^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1230320225 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1230320197 and 1230320206.

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 5 ways as a sum of consecutive naturals, for example, 24606380 + ... + 24606429.

It is an arithmetic number, because the mean of its divisors is an integer number (254266185).

Almost surely, 2^1230320225 is an apocalyptic number.

It is an amenable number.

1230320225 is a deficient number, since it is larger than the sum of its proper divisors (295276885).

1230320225 is an equidigital number, since it uses as much as digits as its factorization.

1230320225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49212819 (or 49212814 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1230320225 is about 35075.9208717319. The cubic root of 1230320225 is about 1071.5342432707.

Adding to 1230320225 its reverse (5220230321), we get a palindrome (6450550546).

The spelling of 1230320225 in words is "one billion, two hundred thirty million, three hundred twenty thousand, two hundred twenty-five".