1255223320 has 128 divisors (see below), whose sum is σ = 3158971200. Its totient is φ = 445906944.

The previous prime is 1255223311. The next prime is 1255223341. The reversal of 1255223320 is 233225521.

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 in 31 ways as a sum of consecutive naturals, for example, 1631896 + ... + 1632664.

Almost surely, 2^1255223320 is an apocalyptic number.

1255223320 is a gapful number since it is divisible by the number (10) 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 1255223320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579485600).

1255223320 is an abundant number, since it is smaller than the sum of its proper divisors (1903747880).

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

1255223320 is a wasteful number, since it uses less digits than its factorization.

1255223320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1255223320 is about 35429.1309518029. The cubic root of 1255223320 is about 1078.7157001537.

Adding to 1255223320 its reverse (233225521), we get a palindrome (1488448841).

The spelling of 1255223320 in words is "one billion, two hundred fifty-five million, two hundred twenty-three thousand, three hundred twenty".