12523645 has 16 divisors (see below), whose sum is σ = 16003008. Its totient is φ = 9376000.

The previous prime is 12523639. The next prime is 12523663. The reversal of 12523645 is 54632521.

It is not a de Polignac number, because 12523645 - 2⁵ = 12523613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21042 + ... + 21628.

It is an arithmetic number, because the mean of its divisors is an integer number (1000188).

Almost surely, 2^12523645 is an apocalyptic number.

It is an amenable number.

12523645 is a deficient number, since it is larger than the sum of its proper divisors (3479363).

12523645 is a wasteful number, since it uses less digits than its factorization.

12523645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its digits is 7200, while the sum is 28.

The square root of 12523645 is about 3538.8762340608. The cubic root of 12523645 is about 232.2256833331.

The spelling of 12523645 in words is "twelve million, five hundred twenty-three thousand, six hundred forty-five".