12450505 has 4 divisors (see below), whose sum is σ = 14940612. Its totient is φ = 9960400.

The previous prime is 12450481. The next prime is 12450509. The reversal of 12450505 is 50505421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50505421 = 5923 ⋅8527.

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 8173881 = 2068^2 + 2859^2 .

It is not a de Polignac number, because 12450505 - 2¹⁹ = 11926217 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12450509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245046 + ... + 1245055.

It is an arithmetic number, because the mean of its divisors is an integer number (3735153).

Almost surely, 2^12450505 is an apocalyptic number.

It is an amenable number.

12450505 is a deficient number, since it is larger than the sum of its proper divisors (2490107).

12450505 is an equidigital number, since it uses as much as digits as its factorization.

12450505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490106.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 12450505 is about 3528.5273132002. The cubic root of 12450505 is about 231.7727225763.

Adding to 12450505 its reverse (50505421), we get a palindrome (62955926).

The spelling of 12450505 in words is "twelve million, four hundred fifty thousand, five hundred five".