12499425 has 36 divisors (see below), whose sum is σ = 22724364. Its totient is φ = 6566400.

The previous prime is 12499381. The next prime is 12499439. The reversal of 12499425 is 52499421.

It can be written as a sum of positive squares in 6 ways, for example, as 2614689 + 9884736 = 1617^2 + 3144^2 .

It is not a de Polignac number, because 12499425 - 2¹⁰ = 12498401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12499425.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16045 + ... + 16805.

Almost surely, 2^12499425 is an apocalyptic number.

12499425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12499425 is a deficient number, since it is larger than the sum of its proper divisors (10224939).

12499425 is a wasteful number, since it uses less digits than its factorization.

12499425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 842 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12499425 is about 3535.4525877177. The cubic root of 12499425 is about 232.0758830746.

The spelling of 12499425 in words is "twelve million, four hundred ninety-nine thousand, four hundred twenty-five".