12447873825 has 12 divisors (see below), whose sum is σ = 20580484848. Its totient is φ = 6638866000.

The previous prime is 12447873821. The next prime is 12447873829. The reversal of 12447873825 is 52837874421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12447873821) and next prime (12447873829).

It is not a de Polignac number, because 12447873825 - 2² = 12447873821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12447873821) 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, 82985751 + ... + 82985900.

It is an arithmetic number, because the mean of its divisors is an integer number (1715040404).

Almost surely, 2^12447873825 is an apocalyptic number.

12447873825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12447873825 is a deficient number, since it is larger than the sum of its proper divisors (8132611023).

12447873825 is a wasteful number, since it uses less digits than its factorization.

12447873825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165971664 (or 165971659 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 51.

The spelling of 12447873825 in words is "twelve billion, four hundred forty-seven million, eight hundred seventy-three thousand, eight hundred twenty-five".