525512320 has 32 divisors (see below), whose sum is σ = 1256304420. Its totient is φ = 210204672.

The previous prime is 525512291. The next prime is 525512321. The reversal of 525512320 is 23215525.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 523128384 + 2383936 = 22872^2 + 1544^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (525512321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409917 + ... + 411196.

Almost surely, 2^525512320 is an apocalyptic number.

It is an amenable number.

525512320 is an abundant number, since it is smaller than the sum of its proper divisors (730792100).

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

525512320 is an equidigital number, since it uses as much as digits as its factorization.

525512320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821132 (or 821120 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 525512320 is about 22924.0554876313. The cubic root of 525512320 is about 806.9766477849.

Adding to 525512320 its reverse (23215525), we get a palindrome (548727845).

The spelling of 525512320 in words is "five hundred twenty-five million, five hundred twelve thousand, three hundred twenty".