12403125 has 90 divisors (see below), whose sum is σ = 26939682. Its totient is φ = 5670000.

The previous prime is 12403123. The next prime is 12403147. The reversal of 12403125 is 52130421.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 3 ways, for example, as 5731236 + 6671889 = 2394^2 + 2583^2 .

It is not a de Polignac number, because 12403125 - 2¹ = 12403123 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12403098 and 12403107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 1771872 + ... + 1771878.

Almost surely, 2^12403125 is an apocalyptic number.

12403125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12403125 is an abundant number, since it is smaller than the sum of its proper divisors (14536557).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12403125 is an frugal number, since it uses more digits than its factorization.

12403125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51 (or 15 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12403125 is about 3521.8070645622. The cubic root of 12403125 is about 231.4783476119.

Adding to 12403125 its reverse (52130421), we get a palindrome (64533546).

The spelling of 12403125 in words is "twelve million, four hundred three thousand, one hundred twenty-five".