12501403143605 has 4 divisors (see below), whose sum is σ = 15001683772332. Its totient is φ = 10001122514880.

The previous prime is 12501403143577. The next prime is 12501403143617. The reversal of 12501403143605 is 50634130410521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9791003967364 + 2710399176241 = 3129058^2 + 1646329^2 .

It is not a de Polignac number, because 12501403143605 - 2¹⁴ = 12501403127221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250140314356 + ... + 1250140314365.

It is an arithmetic number, because the mean of its divisors is an integer number (3750420943083).

Almost surely, 2^{12501403143605} is an apocalyptic number.

It is an amenable number.

12501403143605 is a deficient number, since it is larger than the sum of its proper divisors (2500280628727).

12501403143605 is an equidigital number, since it uses as much as digits as its factorization.

12501403143605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500280628726.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 12501403143605 in words is "twelve trillion, five hundred one billion, four hundred three million, one hundred forty-three thousand, six hundred five".