123522130225 has 12 divisors (see below), whose sum is σ = 164949552796. Its totient is φ = 91216342080.

The previous prime is 123522130219. The next prime is 123522130267. The reversal of 123522130225 is 522031225321.

It can be written as a sum of positive squares in 6 ways, for example, as 2423002176 + 121099128049 = 49224^2 + 347993^2 .

It is not a de Polignac number, because 123522130225 - 2³ = 123522130217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123522130193 and 123522130202.

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 11 ways as a sum of consecutive naturals, for example, 190033722 + ... + 190034371.

Almost surely, 2^123522130225 is an apocalyptic number.

It is an amenable number.

123522130225 is a deficient number, since it is larger than the sum of its proper divisors (41427422571).

123522130225 is a wasteful number, since it uses less digits than its factorization.

123522130225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380068116 (or 380068111 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 123522130225 its reverse (522031225321), we get a palindrome (645553355546).

The spelling of 123522130225 in words is "one hundred twenty-three billion, five hundred twenty-two million, one hundred thirty thousand, two hundred twenty-five".