12738025 has 6 divisors (see below), whose sum is σ = 15795182. Its totient is φ = 10190400.

The previous prime is 12738017. The next prime is 12738031. The reversal of 12738025 is 52083721.

It can be written as a sum of positive squares in 3 ways, for example, as 156816 + 12581209 = 396^2 + 3547^2 .

It is not a de Polignac number, because 12738025 - 2³ = 12738017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12737984 and 12738002.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 254736 + ... + 254785.

Almost surely, 2^12738025 is an apocalyptic number.

It is an amenable number.

12738025 is a deficient number, since it is larger than the sum of its proper divisors (3057157).

12738025 is an equidigital number, since it uses as much as digits as its factorization.

12738025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509531 (or 509526 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 12738025 is about 3569.0369849583. The cubic root of 12738025 is about 233.5432747676.

The spelling of 12738025 in words is "twelve million, seven hundred thirty-eight thousand, twenty-five".