12905523 has 6 divisors (see below), whose sum is σ = 18641324. Its totient is φ = 8603676.

The previous prime is 12905521. The next prime is 12905527. The reversal of 12905523 is 32550921.

12905523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12905523 - 2¹ = 12905521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12905521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 716965 + ... + 716982.

Almost surely, 2^12905523 is an apocalyptic number.

12905523 is a deficient number, since it is larger than the sum of its proper divisors (5735801).

12905523 is a wasteful number, since it uses less digits than its factorization.

12905523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433953 (or 1433950 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 12905523 is about 3592.4257821144. The cubic root of 12905523 is about 234.5624754926.

The spelling of 12905523 in words is "twelve million, nine hundred five thousand, five hundred twenty-three".