1224162505 has 4 divisors (see below), whose sum is σ = 1468995012. Its totient is φ = 979330000.

The previous prime is 1224162491. The next prime is 1224162509. The reversal of 1224162505 is 5052614221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5052614221 = 103 ⋅49054507.

It can be written as a sum of positive squares in 2 ways, for example, as 652904704 + 571257801 = 25552^2 + 23901^2 .

It is not a de Polignac number, because 1224162505 - 2⁵ = 1224162473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224162509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122416246 + ... + 122416255.

It is an arithmetic number, because the mean of its divisors is an integer number (367248753).

Almost surely, 2^1224162505 is an apocalyptic number.

It is an amenable number.

1224162505 is a deficient number, since it is larger than the sum of its proper divisors (244832507).

1224162505 is an equidigital number, since it uses as much as digits as its factorization.

1224162505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244832506.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1224162505 is about 34988.0337401232. The cubic root of 1224162505 is about 1069.7435857469.

Adding to 1224162505 its reverse (5052614221), we get a palindrome (6276776726).

The spelling of 1224162505 in words is "one billion, two hundred twenty-four million, one hundred sixty-two thousand, five hundred five".