255223322240 has 32 divisors (see below), whose sum is σ = 610143256260. Its totient is φ = 102089328640.

The previous prime is 255223322213. The next prime is 255223322243. The reversal of 255223322240 is 42223322552.

It can be written as a sum of positive squares in 2 ways, for example, as 213584471104 + 41638851136 = 462152^2 + 204056^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 255223322197 and 255223322206.

It is not an unprimeable number, because it can be changed into a prime (255223322243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199392581 + ... + 199393860.

Almost surely, 2^255223322240 is an apocalyptic number.

255223322240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255223322240 is an abundant number, since it is smaller than the sum of its proper divisors (354919934020).

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

255223322240 is an equidigital number, since it uses as much as digits as its factorization.

255223322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398786460 (or 398786448 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 255223322240 its reverse (42223322552), we get a palindrome (297446644792).

The spelling of 255223322240 in words is "two hundred fifty-five billion, two hundred twenty-three million, three hundred twenty-two thousand, two hundred forty".