12523345 has 4 divisors (see below), whose sum is σ = 15028020. Its totient is φ = 10018672.

The previous prime is 12523333. The next prime is 12523391. The reversal of 12523345 is 54332521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54332521 = 43 ⋅1263547.

It can be written as a sum of positive squares in 2 ways, for example, as 2461761 + 10061584 = 1569^2 + 3172^2 .

It is a cyclic number.

It is not a de Polignac number, because 12523345 - 2¹⁷ = 12392273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252330 + ... + 1252339.

It is an arithmetic number, because the mean of its divisors is an integer number (3757005).

Almost surely, 2^12523345 is an apocalyptic number.

It is an amenable number.

12523345 is a deficient number, since it is larger than the sum of its proper divisors (2504675).

12523345 is an equidigital number, since it uses as much as digits as its factorization.

12523345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504674.

The product of its digits is 3600, while the sum is 25.

The square root of 12523345 is about 3538.8338474701. The cubic root of 12523345 is about 232.2238290204.

Adding to 12523345 its reverse (54332521), we get a palindrome (66855866).

The spelling of 12523345 in words is "twelve million, five hundred twenty-three thousand, three hundred forty-five".