855800225280 has 4800 divisors, whose sum is σ = 4551728670720. Its totient is φ = 150493593600.

The previous prime is 855800225209. The next prime is 855800225317. The reversal of 855800225280 is 82522008558.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 27606458865 + ... + 27606458895.

Almost surely, 2^855800225280 is an apocalyptic number.

855800225280 is a gapful number since it is divisible by the number (80) 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 855800225280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275864335360).

855800225280 is an abundant number, since it is smaller than the sum of its proper divisors (3695928445440).

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

855800225280 is a wasteful number, since it uses less digits than its factorization.

855800225280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 45.

The spelling of 855800225280 in words is "eight hundred fifty-five billion, eight hundred million, two hundred twenty-five thousand, two hundred eighty".