255868392252 has 72 divisors (see below), whose sum is σ = 656749371600. Its totient is φ = 77475157760.

The previous prime is 255868392251. The next prime is 255868392257. The reversal of 255868392252 is 252293868552.

255868392252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 255868392192 and 255868392201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255868392251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1803274 + ... + 1939982.

It is an arithmetic number, because the mean of its divisors is an integer number (9121519050).

Almost surely, 2^255868392252 is an apocalyptic number.

255868392252 is a gapful number since it is divisible by the number (22) 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 255868392252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328374685800).

255868392252 is an abundant number, since it is smaller than the sum of its proper divisors (400880979348).

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

255868392252 is a wasteful number, since it uses less digits than its factorization.

255868392252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138027 (or 138014 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 57.

The spelling of 255868392252 in words is "two hundred fifty-five billion, eight hundred sixty-eight million, three hundred ninety-two thousand, two hundred fifty-two".