12500578 has 8 divisors (see below), whose sum is σ = 18810972. Its totient is φ = 6230256.

The previous prime is 12500549. The next prime is 12500581. The reversal of 12500578 is 87500521.

It can be written as a sum of positive squares in 2 ways, for example, as 9199089 + 3301489 = 3033^2 + 1817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9225 + ... + 10492.

Almost surely, 2^12500578 is an apocalyptic number.

12500578 is a deficient number, since it is larger than the sum of its proper divisors (6310394).

12500578 is a wasteful number, since it uses less digits than its factorization.

12500578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20036.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 12500578 is about 3535.6156465317. The cubic root of 12500578 is about 232.0830187433.

The spelling of 12500578 in words is "twelve million, five hundred thousand, five hundred seventy-eight".