12505506 has 32 divisors (see below), whose sum is σ = 28522368. Its totient is φ = 3621120.

The previous prime is 12505501. The next prime is 12505543. The reversal of 12505506 is 60550521.

It is not an unprimeable number, because it can be changed into a prime (12505501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3390 + ... + 6041.

It is an arithmetic number, because the mean of its divisors is an integer number (891324).

Almost surely, 2^12505506 is an apocalyptic number.

12505506 is an abundant number, since it is smaller than the sum of its proper divisors (16016862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12505506 is a wasteful number, since it uses less digits than its factorization.

12505506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 12505506 is about 3536.3124861924. The cubic root of 12505506 is about 232.1135121295.

The spelling of 12505506 in words is "twelve million, five hundred five thousand, five hundred six".