12441220525 has 12 divisors (see below), whose sum is σ = 15512351764. Its totient is φ = 9897984000.

The previous prime is 12441220499. The next prime is 12441220529. The reversal of 12441220525 is 52502214421.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3098258244 + 9342962281 = 55662^2 + 96659^2 .

It is not a de Polignac number, because 12441220525 - 2⁷ = 12441220397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12441220493 and 12441220502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12441220529) 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, 1370196 + ... + 1379245.

Almost surely, 2^12441220525 is an apocalyptic number.

It is an amenable number.

12441220525 is a deficient number, since it is larger than the sum of its proper divisors (3071131239).

12441220525 is a wasteful number, since it uses less digits than its factorization.

12441220525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749632 (or 2749627 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 12441220525 its reverse (52502214421), we get a palindrome (64943434946).

The spelling of 12441220525 in words is "twelve billion, four hundred forty-one million, two hundred twenty thousand, five hundred twenty-five".