12609525 has 12 divisors (see below), whose sum is σ = 20847872. Its totient is φ = 6725040.

The previous prime is 12609523. The next prime is 12609533. The reversal of 12609525 is 52590621.

It is a happy number.

12609525 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12609525 - 2¹ = 12609523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12609492 and 12609501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12609523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83989 + ... + 84138.

Almost surely, 2^12609525 is an apocalyptic number.

12609525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12609525 is a deficient number, since it is larger than the sum of its proper divisors (8238347).

12609525 is a wasteful number, since it uses less digits than its factorization.

12609525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168140 (or 168135 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 12609525 is about 3550.9892987729. The cubic root of 12609525 is about 232.7552982450.

The spelling of 12609525 in words is "twelve million, six hundred nine thousand, five hundred twenty-five".