255085550538 has 96 divisors (see below), whose sum is σ = 646816435776. Its totient is φ = 66464681472.

The previous prime is 255085550527. The next prime is 255085550539. The reversal of 255085550538 is 835055580552.

It is a happy number.

255085550538 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (255085550539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84831 + ... + 719282.

It is an arithmetic number, because the mean of its divisors is an integer number (6737671206).

Almost surely, 2^255085550538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255085550538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323408217888).

255085550538 is an abundant number, since it is smaller than the sum of its proper divisors (391730885238).

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

255085550538 is a wasteful number, since it uses less digits than its factorization.

255085550538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804228 (or 804221 counting only the distinct ones).

The product of its (nonzero) digits is 6000000, while the sum is 51.

The spelling of 255085550538 in words is "two hundred fifty-five billion, eighty-five million, five hundred fifty thousand, five hundred thirty-eight".