12125891475 has 36 divisors (see below), whose sum is σ = 21724762800. Its totient is φ = 6465372480.

The previous prime is 12125891473. The next prime is 12125891497. The reversal of 12125891475 is 57419852121.

12125891475 is a `hidden beast` number, since 1 + 21 + 2 + 589 + 1 + 47 + 5 = 666.

12125891475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12125891475 - 2¹ = 12125891473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12125891475.

It is not an unprimeable number, because it can be changed into a prime (12125891471) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 1498741 + ... + 1506809.

Almost surely, 2^12125891475 is an apocalyptic number.

12125891475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12125891475 is a deficient number, since it is larger than the sum of its proper divisors (9598871325).

12125891475 is a wasteful number, since it uses less digits than its factorization.

12125891475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14764 (or 14756 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The spelling of 12125891475 in words is "twelve billion, one hundred twenty-five million, eight hundred ninety-one thousand, four hundred seventy-five".