12400125051105 has 96 divisors (see below), whose sum is σ = 23596559400960. Its totient is φ = 5973990311040.

The previous prime is 12400125051019. The next prime is 12400125051107. The reversal of 12400125051105 is 50115052100421.

It is a happy number.

12400125051105 is a `hidden beast` number, since 1 + 2 + 40 + 0 + 1 + 2 + 505 + 110 + 5 = 666.

It is not a de Polignac number, because 12400125051105 - 2¹⁹ = 12400124526817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12400125051107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 237966484 + ... + 238018586.

It is an arithmetic number, because the mean of its divisors is an integer number (245797493760).

Almost surely, 2^{12400125051105} is an apocalyptic number.

12400125051105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12400125051105 is a deficient number, since it is larger than the sum of its proper divisors (11196434349855).

12400125051105 is a wasteful number, since it uses less digits than its factorization.

12400125051105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55171 (or 55168 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 12400125051105 its reverse (50115052100421), we get a palindrome (62515177151526).

The spelling of 12400125051105 in words is "twelve trillion, four hundred billion, one hundred twenty-five million, fifty-one thousand, one hundred five".