12108725437 has 4 divisors (see below), whose sum is σ = 12233557756. Its totient is φ = 11983893120.

The previous prime is 12108725411. The next prime is 12108725443. The reversal of 12108725437 is 73452780121.

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 4942933636 + 7165791801 = 70306^2 + 84651^2 .

It is a cyclic number.

It is not a de Polignac number, because 12108725437 - 2³¹ = 9961241789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12108725437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12108725407) 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, 62416014 + ... + 62416207.

It is an arithmetic number, because the mean of its divisors is an integer number (3058389439).

Almost surely, 2^12108725437 is an apocalyptic number.

It is an amenable number.

12108725437 is a deficient number, since it is larger than the sum of its proper divisors (124832319).

12108725437 is an equidigital number, since it uses as much as digits as its factorization.

12108725437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124832318.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 12108725437 in words is "twelve billion, one hundred eight million, seven hundred twenty-five thousand, four hundred thirty-seven".