1225443356 has 6 divisors (see below), whose sum is σ = 2144525880. Its totient is φ = 612721676.

The previous prime is 1225443347. The next prime is 1225443377. The reversal of 1225443356 is 6533445221.

It is a super-2 number, since 2×1225443356² = 3003422837529085472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 153180416 + ... + 153180423.

It is an arithmetic number, because the mean of its divisors is an integer number (357420980).

Almost surely, 2^1225443356 is an apocalyptic number.

It is an amenable number.

1225443356 is a deficient number, since it is larger than the sum of its proper divisors (919082524).

1225443356 is a wasteful number, since it uses less digits than its factorization.

1225443356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306360843 (or 306360841 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 1225443356 is about 35006.3330841721. Note that the first 3 decimals coincide. The cubic root of 1225443356 is about 1070.1165494496.

Adding to 1225443356 its reverse (6533445221), we get a palindrome (7758888577).

The spelling of 1225443356 in words is "one billion, two hundred twenty-five million, four hundred forty-three thousand, three hundred fifty-six".