255249715872 has 96 divisors (see below), whose sum is σ = 685790981568. Its totient is φ = 83082940416.

The previous prime is 255249715807. The next prime is 255249715883. The reversal of 255249715872 is 278517942552.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26220318 + ... + 26230050.

It is an arithmetic number, because the mean of its divisors is an integer number (7143656058).

Almost surely, 2^255249715872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255249715872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342895490784).

255249715872 is an abundant number, since it is smaller than the sum of its proper divisors (430541265696).

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

255249715872 is a wasteful number, since it uses less digits than its factorization.

255249715872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16142 (or 16134 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 57.

The spelling of 255249715872 in words is "two hundred fifty-five billion, two hundred forty-nine million, seven hundred fifteen thousand, eight hundred seventy-two".