255731131580 has 96 divisors (see below), whose sum is σ = 572784488640. Its totient is φ = 95573053440.

The previous prime is 255731131559. The next prime is 255731131637. The reversal of 255731131580 is 85131137552.

255731131580 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37720631 + ... + 37727409.

It is an arithmetic number, because the mean of its divisors is an integer number (5966505090).

Almost surely, 2^255731131580 is an apocalyptic number.

255731131580 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 255731131580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286392244320).

255731131580 is an abundant number, since it is smaller than the sum of its proper divisors (317053357060).

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

255731131580 is a wasteful number, since it uses less digits than its factorization.

255731131580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7599 (or 7597 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 255731131580 in words is "two hundred fifty-five billion, seven hundred thirty-one million, one hundred thirty-one thousand, five hundred eighty".