1225368249 has 16 divisors (see below), whose sum is σ = 1868479872. Its totient is φ = 699740928.

The previous prime is 1225368241. The next prime is 1225368253. The reversal of 1225368249 is 9428635221.

It is not a de Polignac number, because 1225368249 - 2³ = 1225368241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225368249.

It is not an unprimeable number, because it can be changed into a prime (1225368241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13827 + ... + 51399.

It is an arithmetic number, because the mean of its divisors is an integer number (116779992).

Almost surely, 2^1225368249 is an apocalyptic number.

It is an amenable number.

1225368249 is a deficient number, since it is larger than the sum of its proper divisors (643111623).

1225368249 is a wasteful number, since it uses less digits than its factorization.

1225368249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39136.

The product of its digits is 207360, while the sum is 42.

The square root of 1225368249 is about 35005.2603047028. The cubic root of 1225368249 is about 1070.0946866450.

The spelling of 1225368249 in words is "one billion, two hundred twenty-five million, three hundred sixty-eight thousand, two hundred forty-nine".