12523665902505 has 8 divisors (see below), whose sum is σ = 20037865444032. Its totient is φ = 6679288481328.

The previous prime is 12523665902459. The next prime is 12523665902533. The reversal of 12523665902505 is 50520956632521.

12523665902505 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 not a de Polignac number, because 12523665902505 - 2²³ = 12523657513897 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417455530069 + ... + 417455530098.

It is an arithmetic number, because the mean of its divisors is an integer number (2504733180504).

Almost surely, 2^{12523665902505} is an apocalyptic number.

12523665902505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12523665902505 is a deficient number, since it is larger than the sum of its proper divisors (7514199541527).

12523665902505 is an equidigital number, since it uses as much as digits as its factorization.

12523665902505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834911060175.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 12523665902505 in words is "twelve trillion, five hundred twenty-three billion, six hundred sixty-five million, nine hundred two thousand, five hundred five".