12541542505 has 8 divisors (see below), whose sum is σ = 15050823552. Its totient is φ = 10032585648.

The previous prime is 12541542493. The next prime is 12541542509. The reversal of 12541542505 is 50524514521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12541542505 - 2²⁹ = 12004671593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12541542509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14254 + ... + 159016.

It is an arithmetic number, because the mean of its divisors is an integer number (1881352944).

Almost surely, 2^12541542505 is an apocalyptic number.

It is an amenable number.

12541542505 is a deficient number, since it is larger than the sum of its proper divisors (2509281047).

12541542505 is a wasteful number, since it uses less digits than its factorization.

12541542505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162095.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 12541542505 in words is "twelve billion, five hundred forty-one million, five hundred forty-two thousand, five hundred five".