12681525 has 24 divisors (see below), whose sum is σ = 21070080. Its totient is φ = 6730240.

The previous prime is 12681509. The next prime is 12681527. The reversal of 12681525 is 52518621.

It is not a de Polignac number, because 12681525 - 2⁴ = 12681509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12681492 and 12681501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26236 + ... + 26714.

It is an arithmetic number, because the mean of its divisors is an integer number (877920).

Almost surely, 2^12681525 is an apocalyptic number.

12681525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12681525 is a deficient number, since it is larger than the sum of its proper divisors (8388555).

12681525 is a wasteful number, since it uses less digits than its factorization.

12681525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 840 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 12681525 is about 3561.1128878484. The cubic root of 12681525 is about 233.1974662531.

The spelling of 12681525 in words is "twelve million, six hundred eighty-one thousand, five hundred twenty-five".