12566152505 has 32 divisors (see below), whose sum is σ = 15466464000. Its totient is φ = 9798700032.

The previous prime is 12566152499. The next prime is 12566152507. The reversal of 12566152505 is 50525166521.

It is a cyclic number.

It is not a de Polignac number, because 12566152505 - 2¹⁸ = 12565890361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12566152507) 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, 15532541 + ... + 15533349.

It is an arithmetic number, because the mean of its divisors is an integer number (483327000).

Almost surely, 2^12566152505 is an apocalyptic number.

It is an amenable number.

12566152505 is a deficient number, since it is larger than the sum of its proper divisors (2900311495).

12566152505 is a wasteful number, since it uses less digits than its factorization.

12566152505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 12566152505 in words is "twelve billion, five hundred sixty-six million, one hundred fifty-two thousand, five hundred five".