12522845 has 4 divisors (see below), whose sum is σ = 15027420. Its totient is φ = 10018272.

The previous prime is 12522841. The next prime is 12522857. The reversal of 12522845 is 54822521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54822521 = 13 ⋅4217117.

It can be written as a sum of positive squares in 2 ways, for example, as 3024121 + 9498724 = 1739^2 + 3082^2 .

It is a cyclic number.

It is not a de Polignac number, because 12522845 - 2² = 12522841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12522841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252280 + ... + 1252289.

It is an arithmetic number, because the mean of its divisors is an integer number (3756855).

Almost surely, 2^12522845 is an apocalyptic number.

It is an amenable number.

12522845 is a deficient number, since it is larger than the sum of its proper divisors (2504575).

12522845 is an equidigital number, since it uses as much as digits as its factorization.

12522845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504574.

The product of its digits is 6400, while the sum is 29.

The square root of 12522845 is about 3538.7632020241. The cubic root of 12522845 is about 232.2207384335.

The spelling of 12522845 in words is "twelve million, five hundred twenty-two thousand, eight hundred forty-five".