12505828 has 6 divisors (see below), whose sum is σ = 21885206. Its totient is φ = 6252912.

The previous prime is 12505811. The next prime is 12505841. The reversal of 12505828 is 82850521.

It can be written as a sum of positive squares in only one way, i.e., 7086244 + 5419584 = 2662^2 + 2328^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12505828.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1563225 + ... + 1563232.

Almost surely, 2^12505828 is an apocalyptic number.

It is an amenable number.

12505828 is a deficient number, since it is larger than the sum of its proper divisors (9379378).

12505828 is a wasteful number, since it uses less digits than its factorization.

12505828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126461 (or 3126459 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 12505828 is about 3536.3580135501. The cubic root of 12505828 is about 232.1155043162.

The spelling of 12505828 in words is "twelve million, five hundred five thousand, eight hundred twenty-eight".