1225199799 has 12 divisors (see below), whose sum is σ = 1770588976. Its totient is φ = 816404832.

The previous prime is 1225199797. The next prime is 1225199863. The reversal of 1225199799 is 9979915221.

It is not a de Polignac number, because 1225199799 - 2¹ = 1225199797 is a prime.

It is a super-2 number, since 2×1225199799² = 3002229094939280802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225199797) 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 11 ways as a sum of consecutive naturals, for example, 12619 + ... + 51084.

Almost surely, 2^1225199799 is an apocalyptic number.

1225199799 is a deficient number, since it is larger than the sum of its proper divisors (545389177).

1225199799 is a wasteful number, since it uses less digits than its factorization.

1225199799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65846 (or 65843 counting only the distinct ones).

The product of its digits is 918540, while the sum is 54.

The square root of 1225199799 is about 35002.8541550543. The cubic root of 1225199799 is about 1070.0456494921.

The spelling of 1225199799 in words is "one billion, two hundred twenty-five million, one hundred ninety-nine thousand, seven hundred ninety-nine".