12605516 has 24 divisors (see below), whose sum is σ = 27503616. Its totient is φ = 4911120.

The previous prime is 12605503. The next prime is 12605519. The reversal of 12605516 is 61550621.

It is not an unprimeable number, because it can be changed into a prime (12605519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20156 + ... + 20771.

It is an arithmetic number, because the mean of its divisors is an integer number (1145984).

Almost surely, 2^12605516 is an apocalyptic number.

It is an amenable number.

12605516 is an abundant number, since it is smaller than the sum of its proper divisors (14898100).

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

12605516 is a wasteful number, since it uses less digits than its factorization.

12605516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40949 (or 40947 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12605516 is about 3550.4247633206. The cubic root of 12605516 is about 232.7306286692.

It can be divided in two parts, 1260 and 5516, that added together give a palindrome (6776).

The spelling of 12605516 in words is "twelve million, six hundred five thousand, five hundred sixteen".