12009525 has 24 divisors (see below), whose sum is σ = 21662304. Its totient is φ = 5822400.

The previous prime is 12009523. The next prime is 12009541. The reversal of 12009525 is 52590021.

It is not a de Polignac number, because 12009525 - 2¹ = 12009523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12009495 and 12009504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6454 + ... + 8103.

It is an arithmetic number, because the mean of its divisors is an integer number (902596).

Almost surely, 2^12009525 is an apocalyptic number.

12009525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12009525 is a deficient number, since it is larger than the sum of its proper divisors (9652779).

12009525 is a wasteful number, since it uses less digits than its factorization.

12009525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14581 (or 14576 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 12009525 is about 3465.4761577596. The cubic root of 12009525 is about 229.0034069527.

Adding to 12009525 its reverse (52590021), we get a palindrome (64599546).

The spelling of 12009525 in words is "twelve million, nine thousand, five hundred twenty-five".