12512503 has 8 divisors (see below), whose sum is σ = 13030416. Its totient is φ = 12004800.

The previous prime is 12512501. The next prime is 12512509. The reversal of 12512503 is 30521521.

12512503 is a nontrivial binomial coefficient, being equal to C(5003, 2).

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

It is not a de Polignac number, because 12512503 - 2¹ = 12512501 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 (12512501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 5002.

It is an arithmetic number, because the mean of its divisors is an integer number (1628802).

Almost surely, 2^12512503 is an apocalyptic number.

12512503 is the 5002-nd triangular number.

12512503 is the 1668-th centered nonagonal number.

12512503 is a deficient number, since it is larger than the sum of its proper divisors (517913).

12512503 is an equidigital number, since it uses as much as digits as its factorization.

12512503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105.

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

The square root of 12512503 is about 3537.3016552169. The cubic root of 12512503 is about 232.1567942762.

It can be divided in two parts, 1251 and 2503, that multiplied together give a triangular number (3131253 = T₂₅₀₂).

The spelling of 12512503 in words is "twelve million, five hundred twelve thousand, five hundred three".