12505035117 has 32 divisors (see below), whose sum is σ = 19391339520. Its totient is φ = 7110132480.

The previous prime is 12505035089. The next prime is 12505035133. The reversal of 12505035117 is 71153050521.

It is not a de Polignac number, because 12505035117 - 2⁷ = 12505034989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505035167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258259 + ... + 302832.

It is an arithmetic number, because the mean of its divisors is an integer number (605979360).

Almost surely, 2^12505035117 is an apocalyptic number.

12505035117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12505035117 is a deficient number, since it is larger than the sum of its proper divisors (6886304403).

12505035117 is a wasteful number, since it uses less digits than its factorization.

12505035117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561153.

The product of its (nonzero) digits is 5250, while the sum is 30.

Adding to 12505035117 its reverse (71153050521), we get a palindrome (83658085638).

The spelling of 12505035117 in words is "twelve billion, five hundred five million, thirty-five thousand, one hundred seventeen".