12125503 has 8 divisors (see below), whose sum is σ = 13280400. Its totient is φ = 11002368.

The previous prime is 12125497. The next prime is 12125521. The reversal of 12125503 is 30552121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12125503 - 2⁹ = 12124991 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 (12125543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7138 + ... + 8671.

It is an arithmetic number, because the mean of its divisors is an integer number (1660050).

Almost surely, 2^12125503 is an apocalyptic number.

12125503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12125503 is a deficient number, since it is larger than the sum of its proper divisors (1154897).

12125503 is a wasteful number, since it uses less digits than its factorization.

12125503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15881.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12125503 is about 3482.1692951377. The cubic root of 12125503 is about 229.7382213837.

Adding to 12125503 its reverse (30552121), we get a palindrome (42677624).

The spelling of 12125503 in words is "twelve million, one hundred twenty-five thousand, five hundred three".