12505134 has 16 divisors (see below), whose sum is σ = 25241040. Its totient is φ = 4129920.

The previous prime is 12505133. The next prime is 12505151. The reversal of 12505134 is 43150521.

It is a self number, because there is not a number n which added to its sum of digits gives 12505134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505133) 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 7 ways as a sum of consecutive naturals, for example, 8907 + ... + 10214.

It is an arithmetic number, because the mean of its divisors is an integer number (1577565).

Almost surely, 2^12505134 is an apocalyptic number.

12505134 is an abundant number, since it is smaller than the sum of its proper divisors (12735906).

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

12505134 is a wasteful number, since it uses less digits than its factorization.

12505134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19235.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12505134 is about 3536.2598886394. The cubic root of 12505134 is about 232.1112105544. Note that the first 3 decimals are identical.

Adding to 12505134 its reverse (43150521), we get a palindrome (55655655).

The spelling of 12505134 in words is "twelve million, five hundred five thousand, one hundred thirty-four".