12786625 has 8 divisors (see below), whose sum is σ = 15957864. Its totient is φ = 10229200.

The previous prime is 12786619. The next prime is 12786649. The reversal of 12786625 is 52668721.

12786625 = 2528² + 2529².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2178576 + 10608049 = 1476^2 + 3257^2 .

It is not a de Polignac number, because 12786625 - 2¹³ = 12778433 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 51022 + ... + 51271.

It is an arithmetic number, because the mean of its divisors is an integer number (1994733).

Almost surely, 2^12786625 is an apocalyptic number.

12786625 is the 2529-th centered square number.

It is an amenable number.

12786625 is a deficient number, since it is larger than the sum of its proper divisors (3171239).

12786625 is an equidigital number, since it uses as much as digits as its factorization.

12786625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102308 (or 102298 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 12786625 is about 3575.8390623740. The cubic root of 12786625 is about 233.8399141257.

The spelling of 12786625 in words is "twelve million, seven hundred eighty-six thousand, six hundred twenty-five".