1255185228 has 24 divisors (see below), whose sum is σ = 3195017280. Its totient is φ = 380359120.

The previous prime is 1255185223. The next prime is 1255185229. The reversal of 1255185228 is 8225815521.

It is not an unprimeable number, because it can be changed into a prime (1255185223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754358 + ... + 4754621.

It is an arithmetic number, because the mean of its divisors is an integer number (133125720).

Almost surely, 2^1255185228 is an apocalyptic number.

It is an amenable number.

1255185228 is an abundant number, since it is smaller than the sum of its proper divisors (1939832052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255185228 is a wasteful number, since it uses less digits than its factorization.

1255185228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9508997 (or 9508995 counting only the distinct ones).

The product of its digits is 64000, while the sum is 39.

The square root of 1255185228 is about 35428.5933675047. The cubic root of 1255185228 is about 1078.7047881899.

It can be divided in two parts, 12551 and 85228, that added together give a palindrome (97779).

The spelling of 1255185228 in words is "one billion, two hundred fifty-five million, one hundred eighty-five thousand, two hundred twenty-eight".