12522609 has 12 divisors (see below), whose sum is σ = 19732752. Its totient is φ = 7589400.

The previous prime is 12522607. The next prime is 12522617. The reversal of 12522609 is 90622521.

12522609 is a `hidden beast` number, since 1 + 2 + 52 + 2 + 609 = 666.

12522609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12522609 - 2¹ = 12522607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12522607) 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 11 ways as a sum of consecutive naturals, for example, 63147 + ... + 63344.

It is an arithmetic number, because the mean of its divisors is an integer number (1644396).

Almost surely, 2^12522609 is an apocalyptic number.

It is an amenable number.

12522609 is a deficient number, since it is larger than the sum of its proper divisors (7210143).

12522609 is a wasteful number, since it uses less digits than its factorization.

12522609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126508 (or 126505 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12522609 is about 3538.7298568837. The cubic root of 12522609 is about 232.2192796478.

It can be divided in two parts, 12522 and 609, that added together give a palindrome (13131).

The spelling of 12522609 in words is "twelve million, five hundred twenty-two thousand, six hundred nine".