12521075 has 12 divisors (see below), whose sum is σ = 17744400. Its totient is φ = 8585760.

The previous prime is 12521053. The next prime is 12521081. The reversal of 12521075 is 57012521.

It is a happy number.

12521075 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 12521075 - 2¹⁰ = 12520051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12521075.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35600 + ... + 35949.

It is an arithmetic number, because the mean of its divisors is an integer number (1478700).

Almost surely, 2^12521075 is an apocalyptic number.

12521075 is a deficient number, since it is larger than the sum of its proper divisors (5223325).

12521075 is an equidigital number, since it uses as much as digits as its factorization.

12521075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71566 (or 71561 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12521075 is about 3538.5131058115. The cubic root of 12521075 is about 232.2097970945.

Adding to 12521075 its reverse (57012521), we get a palindrome (69533596).

The spelling of 12521075 in words is "twelve million, five hundred twenty-one thousand, seventy-five".