12322505 has 16 divisors (see below), whose sum is σ = 16090704. Its totient is φ = 9004800.

The previous prime is 12322451. The next prime is 12322523. The reversal of 12322505 is 50522321.

12322505 = 403² + 404² + ... + 467².

It can be written as a sum of positive squares in 8 ways, for example, as 100489 + 12222016 = 317^2 + 3496^2 .

It is not a de Polignac number, because 12322505 - 2¹⁶ = 12256969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5627 + ... + 7503.

It is an arithmetic number, because the mean of its divisors is an integer number (1005669).

Almost surely, 2^12322505 is an apocalyptic number.

It is an amenable number.

12322505 is a deficient number, since it is larger than the sum of its proper divisors (3768199).

12322505 is a wasteful number, since it uses less digits than its factorization.

12322505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 12322505 is about 3510.3425758749. The cubic root of 12322505 is about 230.9757225412.

Adding to 12322505 its reverse (50522321), we get a palindrome (62844826).

The spelling of 12322505 in words is "twelve million, three hundred twenty-two thousand, five hundred five".