12506105 has 8 divisors (see below), whose sum is σ = 15525000. Its totient is φ = 9659776.

The previous prime is 12506083. The next prime is 12506147. The reversal of 12506105 is 50160521.

It can be written as a sum of positive squares in 4 ways, for example, as 4682896 + 7823209 = 2164^2 + 2797^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12506105 - 2⁶ = 12506041 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42980 + ... + 43269.

It is an arithmetic number, because the mean of its divisors is an integer number (1940625).

Almost surely, 2^12506105 is an apocalyptic number.

It is an amenable number.

12506105 is a deficient number, since it is larger than the sum of its proper divisors (3018895).

12506105 is an equidigital number, since it uses as much as digits as its factorization.

12506105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86283.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 12506105 is about 3536.3971779199. The cubic root of 12506105 is about 232.1172180644.

Adding to 12506105 its reverse (50160521), we get a palindrome (62666626).

The spelling of 12506105 in words is "twelve million, five hundred six thousand, one hundred five".