12505523 has 8 divisors (see below), whose sum is σ = 13325328. Its totient is φ = 11695104.

The previous prime is 12505501. The next prime is 12505543. The reversal of 12505523 is 32550521.

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 12505523 - 2⁸ = 12505267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12505543) 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, 515 + ... + 5027.

It is an arithmetic number, because the mean of its divisors is an integer number (1665666).

Almost surely, 2^12505523 is an apocalyptic number.

12505523 is a deficient number, since it is larger than the sum of its proper divisors (819805).

12505523 is a wasteful number, since it uses less digits than its factorization.

12505523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 12505523 is about 3536.3148898253. The cubic root of 12505523 is about 232.1136173079.

The spelling of 12505523 in words is "twelve million, five hundred five thousand, five hundred twenty-three".