12325521 has 32 divisors (see below), whose sum is σ = 18506880. Its totient is φ = 7248384.

The previous prime is 12325519. The next prime is 12325549. The reversal of 12325521 is 12552321.

It is not a de Polignac number, because 12325521 - 2¹ = 12325519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12325021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138445 + ... + 138533.

It is an arithmetic number, because the mean of its divisors is an integer number (578340).

Almost surely, 2^12325521 is an apocalyptic number.

It is an amenable number.

12325521 is a deficient number, since it is larger than the sum of its proper divisors (6181359).

12325521 is a wasteful number, since it uses less digits than its factorization.

12325521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225.

The product of its digits is 600, while the sum is 21.

The square root of 12325521 is about 3510.7721372940. The cubic root of 12325521 is about 230.9945651914.

Adding to 12325521 its reverse (12552321), we get a palindrome (24877842).

The spelling of 12325521 in words is "twelve million, three hundred twenty-five thousand, five hundred twenty-one".