525230020 has 72 divisors (see below), whose sum is σ = 1327377240. Its totient is φ = 173859840.

The previous prime is 525230003. The next prime is 525230021. The reversal of 525230020 is 20032525.

It can be written as a sum of positive squares in 4 ways, for example, as 171714816 + 353515204 = 13104^2 + 18802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 525230020.

It is not an unprimeable number, because it can be changed into a prime (525230021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19180 + ... + 37660.

It is an arithmetic number, because the mean of its divisors is an integer number (18435795).

Almost surely, 2^525230020 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 525230020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663688620).

525230020 is an abundant number, since it is smaller than the sum of its proper divisors (802147220).

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

525230020 is a wasteful number, since it uses less digits than its factorization.

525230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18533 (or 18524 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 525230020 is about 22917.8973730140. The cubic root of 525230020 is about 806.8321219552.

Adding to 525230020 its reverse (20032525), we get a palindrome (545262545).

The spelling of 525230020 in words is "five hundred twenty-five million, two hundred thirty thousand, twenty".