12445444543525 has 24 divisors (see below), whose sum is σ = 17808205610624. Its totient is φ = 8451164548800.

The previous prime is 12445444543421. The next prime is 12445444543541. The reversal of 12445444543525 is 52534544454421.

It is not a de Polignac number, because 12445444543525 - 2¹⁹ = 12445444019237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345209286 + ... + 345245335.

Almost surely, 2^{12445444543525} is an apocalyptic number.

It is an amenable number.

12445444543525 is a deficient number, since it is larger than the sum of its proper divisors (5362761067099).

12445444543525 is a wasteful number, since it uses less digits than its factorization.

12445444543525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690454741 (or 690454736 counting only the distinct ones).

The product of its digits is 30720000, while the sum is 52.

Adding to 12445444543525 its reverse (52534544454421), we get a palindrome (64979988997946).

The spelling of 12445444543525 in words is "twelve trillion, four hundred forty-five billion, four hundred forty-four million, five hundred forty-three thousand, five hundred twenty-five".