12508523 has 4 divisors (see below), whose sum is σ = 12573528. Its totient is φ = 12443520.

The previous prime is 12508519. The next prime is 12508537. The reversal of 12508523 is 32580521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12508523 - 2² = 12508519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12508492 and 12508501.

It is not an unprimeable number, because it can be changed into a prime (12508123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32213 + ... + 32598.

It is an arithmetic number, because the mean of its divisors is an integer number (3143382).

Almost surely, 2^12508523 is an apocalyptic number.

12508523 is a deficient number, since it is larger than the sum of its proper divisors (65005).

12508523 is an equidigital number, since it uses as much as digits as its factorization.

12508523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65004.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 12508523 is about 3536.7390347607. The cubic root of 12508523 is about 232.1321767123.

It can be divided in two parts, 12508 and 523, that added together give a palindrome (13031).

The spelling of 12508523 in words is "twelve million, five hundred eight thousand, five hundred twenty-three".