12503252126 has 4 divisors (see below), whose sum is σ = 18754878192. Its totient is φ = 6251626062.

The previous prime is 12503252117. The next prime is 12503252147. The reversal of 12503252126 is 62125230521.

12503252126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3125813030 + ... + 3125813033.

It is an arithmetic number, because the mean of its divisors is an integer number (4688719548).

Almost surely, 2^12503252126 is an apocalyptic number.

12503252126 is a deficient number, since it is larger than the sum of its proper divisors (6251626066).

12503252126 is an equidigital number, since it uses as much as digits as its factorization.

12503252126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251626065.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 12503252126 its reverse (62125230521), we get a palindrome (74628482647).

The spelling of 12503252126 in words is "twelve billion, five hundred three million, two hundred fifty-two thousand, one hundred twenty-six".