12125001805 has 8 divisors (see below), whose sum is σ = 16628573952. Its totient is φ = 8314286928.

The previous prime is 12125001769. The next prime is 12125001857. The reversal of 12125001805 is 50810052121.

12125001805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12125001805 - 2¹³ = 12124993613 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 12125001805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173214277 + ... + 173214346.

It is an arithmetic number, because the mean of its divisors is an integer number (2078571744).

Almost surely, 2^12125001805 is an apocalyptic number.

It is an amenable number.

12125001805 is a deficient number, since it is larger than the sum of its proper divisors (4503572147).

12125001805 is an equidigital number, since it uses as much as digits as its factorization.

12125001805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346428635.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 12125001805 its reverse (50810052121), we get a palindrome (62935053926).

The spelling of 12125001805 in words is "twelve billion, one hundred twenty-five million, one thousand, eight hundred five".