1225553236 has 6 divisors (see below), whose sum is σ = 2144718170. Its totient is φ = 612776616.

The previous prime is 1225553207. The next prime is 1225553243. The reversal of 1225553236 is 6323555221.

It can be written as a sum of positive squares in only one way, i.e., 1136364100 + 89189136 = 33710^2 + 9444^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 153194151 + ... + 153194158.

Almost surely, 2^1225553236 is an apocalyptic number.

It is an amenable number.

1225553236 is a deficient number, since it is larger than the sum of its proper divisors (919164934).

1225553236 is a wasteful number, since it uses less digits than its factorization.

1225553236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306388313 (or 306388311 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 1225553236 is about 35007.9024792974. The cubic root of 1225553236 is about 1070.1485326747.

The spelling of 1225553236 in words is "one billion, two hundred twenty-five million, five hundred fifty-three thousand, two hundred thirty-six".