12534251105 has 4 divisors (see below), whose sum is σ = 15041101332. Its totient is φ = 10027400880.

The previous prime is 12534251083. The next prime is 12534251117. The reversal of 12534251105 is 50115243521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50115243521 = 7 ⋅7159320503.

It can be written as a sum of positive squares in 2 ways, for example, as 8329117696 + 4205133409 = 91264^2 + 64847^2 .

It is not a de Polignac number, because 12534251105 - 2¹⁶ = 12534185569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253425106 + ... + 1253425115.

It is an arithmetic number, because the mean of its divisors is an integer number (3760275333).

Almost surely, 2^12534251105 is an apocalyptic number.

It is an amenable number.

12534251105 is a deficient number, since it is larger than the sum of its proper divisors (2506850227).

12534251105 is an equidigital number, since it uses as much as digits as its factorization.

12534251105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506850226.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 12534251105 its reverse (50115243521), we get a palindrome (62649494626).

The spelling of 12534251105 in words is "twelve billion, five hundred thirty-four million, two hundred fifty-one thousand, one hundred five".