12144725 has 12 divisors (see below), whose sum is σ = 15103200. Its totient is φ = 9687600.

The previous prime is 12144709. The next prime is 12144739. The reversal of 12144725 is 52744121.

It is not a de Polignac number, because 12144725 - 2⁴ = 12144709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12144694 and 12144703.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 14570 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (1258600).

Almost surely, 2^12144725 is an apocalyptic number.

It is an amenable number.

12144725 is a deficient number, since it is larger than the sum of its proper divisors (2958475).

12144725 is an equidigital number, since it uses as much as digits as its factorization.

12144725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1415 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 12144725 is about 3484.9282632502. The cubic root of 12144725 is about 229.8595550893.

Adding to 12144725 its reverse (52744121), we get a palindrome (64888846).

The spelling of 12144725 in words is "twelve million, one hundred forty-four thousand, seven hundred twenty-five".