1255555224 has 144 divisors (see below), whose sum is σ = 4315376520. Its totient is φ = 326108160.

The previous prime is 1255555187. The next prime is 1255555291. The reversal of 1255555224 is 4225555521.

1255555224 is a `hidden beast` number, since 125 + 5 + 5 + 5 + 522 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22632 + ... + 54984.

Almost surely, 2^1255555224 is an apocalyptic number.

1255555224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255555224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2157688260).

1255555224 is an abundant number, since it is smaller than the sum of its proper divisors (3059821296).

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

1255555224 is a wasteful number, since it uses less digits than its factorization.

1255555224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32390 (or 32376 counting only the distinct ones).

The product of its digits is 100000, while the sum is 36.

The square root of 1255555224 is about 35433.8146972634. The cubic root of 1255555224 is about 1078.8107691607.

The spelling of 1255555224 in words is "one billion, two hundred fifty-five million, five hundred fifty-five thousand, two hundred twenty-four".