305525000 has 144 divisors (see below), whose sum is σ = 794831940. Its totient is φ = 110000000.

The previous prime is 305524991. The next prime is 305525029. The reversal of 305525000 is 525503.

It can be written as a sum of positive squares in 6 ways, for example, as 1162084 + 304362916 = 1078^2 + 17446^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3024950 + ... + 3025050.

Almost surely, 2^305525000 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 305525000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397415970).

305525000 is an abundant number, since it is smaller than the sum of its proper divisors (489306940).

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

305525000 is a wasteful number, since it uses less digits than its factorization.

305525000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 305525000 is about 17479.2734402778. The cubic root of 305525000 is about 673.5175513552.

The spelling of 305525000 in words is "three hundred five million, five hundred twenty-five thousand".