12543441625 has 32 divisors (see below), whose sum is σ = 18390992256. Its totient is φ = 8420760000.

The previous prime is 12543441623. The next prime is 12543441671. The reversal of 12543441625 is 52614434521.

It is not a de Polignac number, because 12543441625 - 2¹ = 12543441623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12543441623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332991 + ... + 368740.

It is an arithmetic number, because the mean of its divisors is an integer number (574718508).

Almost surely, 2^12543441625 is an apocalyptic number.

It is an amenable number.

12543441625 is a deficient number, since it is larger than the sum of its proper divisors (5847550631).

12543441625 is a wasteful number, since it uses less digits than its factorization.

12543441625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701770 (or 701760 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The spelling of 12543441625 in words is "twelve billion, five hundred forty-three million, four hundred forty-one thousand, six hundred twenty-five".