285225120 has 72 divisors (see below), whose sum is σ = 973335636. Its totient is φ = 76059648.

The previous prime is 285225113. The next prime is 285225163. The reversal of 285225120 is 21522582.

It can be written as a sum of positive squares in 2 ways, for example, as 283450896 + 1774224 = 16836^2 + 1332^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97597 + ... + 100476.

Almost surely, 2^285225120 is an apocalyptic number.

285225120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285225120 is an abundant number, since it is smaller than the sum of its proper divisors (688110516).

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

285225120 is a wasteful number, since it uses less digits than its factorization.

285225120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198094 (or 198083 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 285225120 is about 16888.6091789703. The cubic root of 285225120 is about 658.2576633994.

It can be divided in two parts, 2852 and 25120, that added together give a palindrome (27972).

The spelling of 285225120 in words is "two hundred eighty-five million, two hundred twenty-five thousand, one hundred twenty".