12505165 has 8 divisors (see below), whose sum is σ = 15062040. Its totient is φ = 9966912.

The previous prime is 12505151. The next prime is 12505189. The reversal of 12505165 is 56150521.

It can be written as a sum of positive squares in 4 ways, for example, as 3031081 + 9474084 = 1741^2 + 3078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12505165 - 2⁵ = 12505133 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3130 + ... + 5899.

It is an arithmetic number, because the mean of its divisors is an integer number (1882755).

Almost surely, 2^12505165 is an apocalyptic number.

It is an amenable number.

12505165 is a deficient number, since it is larger than the sum of its proper divisors (2556875).

12505165 is an equidigital number, since it uses as much as digits as its factorization.

12505165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 12505165 is about 3536.2642717987. The cubic root of 12505165 is about 232.1114023541. Note that the first 3 decimals are identical.

Adding to 12505165 its reverse (56150521), we get a palindrome (68655686).

It can be divided in two parts, 1250516 and 5, that added together give a palindrome (1250521).

The spelling of 12505165 in words is "twelve million, five hundred five thousand, one hundred sixty-five".