12505164623 has 16 divisors (see below), whose sum is σ = 15192624384. Its totient is φ = 10047984000.

The previous prime is 12505164541. The next prime is 12505164671. The reversal of 12505164623 is 32646150521.

It is a cyclic number.

It is not a de Polignac number, because 12505164623 - 2¹² = 12505160527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505164823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179465 + ... + 239202.

It is an arithmetic number, because the mean of its divisors is an integer number (949539024).

Almost surely, 2^12505164623 is an apocalyptic number.

12505164623 is a deficient number, since it is larger than the sum of its proper divisors (2687459761).

12505164623 is a wasteful number, since it uses less digits than its factorization.

12505164623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418942.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 12505164623 in words is "twelve billion, five hundred five million, one hundred sixty-four thousand, six hundred twenty-three".