1255565228 has 6 divisors (see below), whose sum is σ = 2197239156. Its totient is φ = 627782612.

The previous prime is 1255565221. The next prime is 1255565231. The reversal of 1255565228 is 8225655521.

It is not an unprimeable number, because it can be changed into a prime (1255565221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156945650 + ... + 156945657.

It is an arithmetic number, because the mean of its divisors is an integer number (366206526).

Almost surely, 2^1255565228 is an apocalyptic number.

It is an amenable number.

1255565228 is a deficient number, since it is larger than the sum of its proper divisors (941673928).

1255565228 is a wasteful number, since it uses less digits than its factorization.

1255565228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313891311 (or 313891309 counting only the distinct ones).

The product of its digits is 240000, while the sum is 41.

The square root of 1255565228 is about 35433.9558615744. The cubic root of 1255565228 is about 1078.8136343989.

The spelling of 1255565228 in words is "one billion, two hundred fifty-five million, five hundred sixty-five thousand, two hundred twenty-eight".