255924865920 has 128 divisors (see below), whose sum is σ = 816401268000. Its totient is φ = 68193026048.

The previous prime is 255924865901. The next prime is 255924865927. The reversal of 255924865920 is 29568429552.

It is a happy number.

255924865920 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 tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255924865927) 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 15 ways as a sum of consecutive naturals, for example, 2423176 + ... + 2526584.

Almost surely, 2^255924865920 is an apocalyptic number.

255924865920 is a gapful number since it is divisible by the number (20) 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 255924865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408200634000).

255924865920 is an abundant number, since it is smaller than the sum of its proper divisors (560476402080).

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

255924865920 is a wasteful number, since it uses less digits than its factorization.

255924865920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104720 (or 104708 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 255924865920 in words is "two hundred fifty-five billion, nine hundred twenty-four million, eight hundred sixty-five thousand, nine hundred twenty".