281225115888 has 160 divisors (see below), whose sum is σ = 767602870272. Its totient is φ = 88620288000.

The previous prime is 281225115887. The next prime is 281225115937. The reversal of 281225115888 is 888511522182.

It is a self number, because there is not a number n which added to its sum of digits gives 281225115888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281225115887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9327045 + ... + 9357147.

Almost surely, 2^281225115888 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 281225115888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383801435136).

281225115888 is an abundant number, since it is smaller than the sum of its proper divisors (486377754384).

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

281225115888 is a wasteful number, since it uses less digits than its factorization.

281225115888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30303 (or 30297 counting only the distinct ones).

The product of its digits is 819200, while the sum is 51.

The spelling of 281225115888 in words is "two hundred eighty-one billion, two hundred twenty-five million, one hundred fifteen thousand, eight hundred eighty-eight".