12663125 has 10 divisors (see below), whose sum is σ = 15824622. Its totient is φ = 10130000.

The previous prime is 12663121. The next prime is 12663127. The reversal of 12663125 is 52136621.

It can be written as a sum of positive squares in 5 ways, for example, as 9132484 + 3530641 = 3022^2 + 1879^2 .

It is not a de Polignac number, because 12663125 - 2² = 12663121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12663094 and 12663103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9506 + ... + 10755.

Almost surely, 2^12663125 is an apocalyptic number.

It is an amenable number.

12663125 is a deficient number, since it is larger than the sum of its proper divisors (3161497).

12663125 is an frugal number, since it uses more digits than its factorization.

12663125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20281 (or 20266 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 12663125 is about 3558.5284880130. The cubic root of 12663125 is about 233.0846272929.

Adding to 12663125 its reverse (52136621), we get a palindrome (64799746).

The spelling of 12663125 in words is "twelve million, six hundred sixty-three thousand, one hundred twenty-five".