525445120 has 144 divisors (see below), whose sum is σ = 1331546580. Its totient is φ = 198967296.

The previous prime is 525445117. The next prime is 525445121. The reversal of 525445120 is 21544525.

It can be written as a sum of positive squares in 2 ways, for example, as 520569856 + 4875264 = 22816^2 + 2208^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (525445121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5416912 + ... + 5417008.

Almost surely, 2^525445120 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 525445120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665773290).

525445120 is an abundant number, since it is smaller than the sum of its proper divisors (806101460).

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

525445120 is an equidigital number, since it uses as much as digits as its factorization.

525445120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 525445120 is about 22922.5897315290. The cubic root of 525445120 is about 806.9422488816.

Adding to 525445120 its reverse (21544525), we get a palindrome (546989645).

The spelling of 525445120 in words is "five hundred twenty-five million, four hundred forty-five thousand, one hundred twenty".