525530220 has 48 divisors (see below), whose sum is σ = 1535466240. Its totient is φ = 134047936.

The previous prime is 525530209. The next prime is 525530233. The reversal of 525530220 is 22035525.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189030 + ... + 191789.

It is an arithmetic number, because the mean of its divisors is an integer number (31988880).

Almost surely, 2^525530220 is an apocalyptic number.

It is an amenable number.

525530220 is an abundant number, since it is smaller than the sum of its proper divisors (1009936020).

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

525530220 is a wasteful number, since it uses less digits than its factorization.

525530220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380854 (or 380852 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 525530220 is about 22924.4459038817. The cubic root of 525530220 is about 806.9858100934.

Adding to 525530220 its reverse (22035525), we get a palindrome (547565745).

The spelling of 525530220 in words is "five hundred twenty-five million, five hundred thirty thousand, two hundred twenty".