12525442426 has 24 divisors (see below), whose sum is σ = 21866686560. Its totient is φ = 5365328472.

The previous prime is 12525442421. The next prime is 12525442429. The reversal of 12525442426 is 62424452521.

It is not an unprimeable number, because it can be changed into a prime (12525442421) 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, 168481 + ... + 231163.

It is an arithmetic number, because the mean of its divisors is an integer number (911111940).

Almost surely, 2^12525442426 is an apocalyptic number.

12525442426 is a deficient number, since it is larger than the sum of its proper divisors (9341244134).

12525442426 is a wasteful number, since it uses less digits than its factorization.

12525442426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64738 (or 64731 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 12525442426 its reverse (62424452521), we get a palindrome (74949894947).

The spelling of 12525442426 in words is "twelve billion, five hundred twenty-five million, four hundred forty-two thousand, four hundred twenty-six".