12505453 has 4 divisors (see below), whose sum is σ = 12529888. Its totient is φ = 12481020.

The previous prime is 12505417. The next prime is 12505457. The reversal of 12505453 is 35450521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12505453 - 2⁹ = 12504941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505457) 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, 11433 + ... + 12478.

It is an arithmetic number, because the mean of its divisors is an integer number (3132472).

Almost surely, 2^12505453 is an apocalyptic number.

It is an amenable number.

12505453 is a deficient number, since it is larger than the sum of its proper divisors (24435).

12505453 is an equidigital number, since it uses as much as digits as its factorization.

12505453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24434.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 12505453 is about 3536.3049925028. The cubic root of 12505453 is about 232.1131842197.

Adding to 12505453 its reverse (35450521), we get a palindrome (47955974).

The spelling of 12505453 in words is "twelve million, five hundred five thousand, four hundred fifty-three".