12505023 has 12 divisors (see below), whose sum is σ = 18732168. Its totient is φ = 8336520.

The previous prime is 12504977. The next prime is 12505037. The reversal of 12505023 is 32050521.

It is a happy number.

It is not a de Polignac number, because 12505023 - 2¹⁰ = 12503999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12504987 and 12505005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25488 + ... + 25973.

It is an arithmetic number, because the mean of its divisors is an integer number (1561014).

Almost surely, 2^12505023 is an apocalyptic number.

12505023 is a deficient number, since it is larger than the sum of its proper divisors (6227145).

12505023 is an frugal number, since it uses more digits than its factorization.

12505023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51476 (or 51464 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 12505023 is about 3536.2441940567. The cubic root of 12505023 is about 232.1105237853.

Adding to 12505023 its reverse (32050521), we get a palindrome (44555544).

The spelling of 12505023 in words is "twelve million, five hundred five thousand, twenty-three".