12731225599 has 4 divisors (see below), whose sum is σ = 12731892160. Its totient is φ = 12730559040.

The previous prime is 12731225597. The next prime is 12731225609. The reversal of 12731225599 is 99552213721.

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

It is a cyclic number.

It is not a de Polignac number, because 12731225599 - 2¹ = 12731225597 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 (12731225593) 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, 303759 + ... + 343120.

It is an arithmetic number, because the mean of its divisors is an integer number (3182973040).

Almost surely, 2^12731225599 is an apocalyptic number.

12731225599 is a deficient number, since it is larger than the sum of its proper divisors (666561).

12731225599 is an equidigital number, since it uses as much as digits as its factorization.

12731225599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666560.

The product of its digits is 340200, while the sum is 46.

It can be divided in two parts, 1273122 and 5599, that added together give a palindrome (1278721).

The spelling of 12731225599 in words is "twelve billion, seven hundred thirty-one million, two hundred twenty-five thousand, five hundred ninety-nine".