12225125525 has 6 divisors (see below), whose sum is σ = 15159155682. Its totient is φ = 9780100400.

The previous prime is 12225125509. The next prime is 12225125551. The reversal of 12225125525 is 52552152221.

12225125525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7360369 + 12217765156 = 2713^2 + 110534^2 .

It is not a de Polignac number, because 12225125525 - 2⁴ = 12225125509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12225125491 and 12225125500.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 244502486 + ... + 244502535.

It is an arithmetic number, because the mean of its divisors is an integer number (2526525947).

Almost surely, 2^12225125525 is an apocalyptic number.

It is an amenable number.

12225125525 is a deficient number, since it is larger than the sum of its proper divisors (2934030157).

12225125525 is an equidigital number, since it uses as much as digits as its factorization.

12225125525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489005031 (or 489005026 counting only the distinct ones).

The product of its digits is 20000, while the sum is 32.

Adding to 12225125525 its reverse (52552152221), we get a palindrome (64777277746).

The spelling of 12225125525 in words is "twelve billion, two hundred twenty-five million, one hundred twenty-five thousand, five hundred twenty-five".