255603621222 has 48 divisors (see below), whose sum is σ = 574399360080. Its totient is φ = 85189322592.

The previous prime is 255603621209. The next prime is 255603621233. The reversal of 255603621222 is 222126306552.

255603621222 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 0 + 3 + 621 + 2 + 22 = 666.

It is a super-2 number, since 2×255603621222² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3881104 + ... + 3946412.

It is an arithmetic number, because the mean of its divisors is an integer number (11966653335).

Almost surely, 2^255603621222 is an apocalyptic number.

255603621222 is an abundant number, since it is smaller than the sum of its proper divisors (318795738858).

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

255603621222 is an equidigital number, since it uses as much as digits as its factorization.

255603621222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73379 (or 73367 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 255603621222 its reverse (222126306552), we get a palindrome (477729927774).

The spelling of 255603621222 in words is "two hundred fifty-five billion, six hundred three million, six hundred twenty-one thousand, two hundred twenty-two".