12703220225 has 6 divisors (see below), whose sum is σ = 15751993110. Its totient is φ = 10162576160.

The previous prime is 12703220221. The next prime is 12703220227. The reversal of 12703220225 is 52202230721.

It can be written as a sum of positive squares in 3 ways, for example, as 67436944 + 12635783281 = 8212^2 + 112409^2 .

It is not a de Polignac number, because 12703220225 - 2² = 12703220221 is a prime.

It is a super-2 number, since 2×12703220225² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12703220194 and 12703220203.

It is not an unprimeable number, because it can be changed into a prime (12703220221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254064380 + ... + 254064429.

It is an arithmetic number, because the mean of its divisors is an integer number (2625332185).

Almost surely, 2^12703220225 is an apocalyptic number.

It is an amenable number.

12703220225 is a deficient number, since it is larger than the sum of its proper divisors (3048772885).

12703220225 is an equidigital number, since it uses as much as digits as its factorization.

12703220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508128819 (or 508128814 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 12703220225 its reverse (52202230721), we get a palindrome (64905450946).

The spelling of 12703220225 in words is "twelve billion, seven hundred three million, two hundred twenty thousand, two hundred twenty-five".