1225613356 has 18 divisors (see below), whose sum is σ = 2357534060. Its totient is φ = 557096760.

The previous prime is 1225613329. The next prime is 1225613359. The reversal of 1225613356 is 6533165221.

It is not an unprimeable number, because it can be changed into a prime (1225613359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1265646 + ... + 1266613.

Almost surely, 2^1225613356 is an apocalyptic number.

It is an amenable number.

1225613356 is a deficient number, since it is larger than the sum of its proper divisors (1131920704).

1225613356 is a wasteful number, since it uses less digits than its factorization.

1225613356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532285 (or 2532272 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 1225613356 is about 35008.7611320366. The cubic root of 1225613356 is about 1070.1660312421.

Adding to 1225613356 its reverse (6533165221), we get a palindrome (7758778577).

The spelling of 1225613356 in words is "one billion, two hundred twenty-five million, six hundred thirteen thousand, three hundred fifty-six".