1224862360225 has 81 divisors (see below), whose sum is σ = 1789951812147. Its totient is φ = 829041907680.

The previous prime is 1224862360223. The next prime is 1224862360279. The reversal of 1224862360225 is 5220632684221.

The square root of 1224862360225 is 1106735.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 440950449681 + 783911910544 = 664041^2 + 885388^2 .

It is not a de Polignac number, because 1224862360225 - 2¹ = 1224862360223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224862360223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3989779522 + ... + 3989779828.

Almost surely, 2^{1224862360225} is an apocalyptic number.

1224862360225 is the 1106735-th square number.

1224862360225 is the 553368-th centered octagonal number.

It is an amenable number.

1224862360225 is a deficient number, since it is larger than the sum of its proper divisors (565089451922).

1224862360225 is an frugal number, since it uses more digits than its factorization.

1224862360225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 1224862360225 in words is "one trillion, two hundred twenty-four billion, eight hundred sixty-two million, three hundred sixty thousand, two hundred twenty-five".