12501402503 has 4 divisors (see below), whose sum is σ = 12501642048. Its totient is φ = 12501162960.

The previous prime is 12501402467. The next prime is 12501402521. The reversal of 12501402503 is 30520410521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30520410521 = 29 ⋅1052427949.

It is a cyclic number.

It is not a de Polignac number, because 12501402503 - 2²⁶ = 12434293639 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 (12501402103) 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, 4526 + ... + 158187.

It is an arithmetic number, because the mean of its divisors is an integer number (3125410512).

Almost surely, 2^12501402503 is an apocalyptic number.

12501402503 is a deficient number, since it is larger than the sum of its proper divisors (239545).

12501402503 is an equidigital number, since it uses as much as digits as its factorization.

12501402503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239544.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 12501402503 in words is "twelve billion, five hundred one million, four hundred two thousand, five hundred three".