525565530 has 128 divisors (see below), whose sum is σ = 1607823360. Its totient is φ = 119672640.

The previous prime is 525565493. The next prime is 525565531. The reversal of 525565530 is 35565525.

525565530 is a `hidden beast` number, since 52 + 5 + 56 + 553 + 0 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525565531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 920145 + ... + 920715.

It is an arithmetic number, because the mean of its divisors is an integer number (12561120).

Almost surely, 2^525565530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525565530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803911680).

525565530 is an abundant number, since it is smaller than the sum of its proper divisors (1082257830).

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

525565530 is a wasteful number, since it uses less digits than its factorization.

525565530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The square root of 525565530 is about 22925.2160295165. The cubic root of 525565530 is about 807.0038832886.

The spelling of 525565530 in words is "five hundred twenty-five million, five hundred sixty-five thousand, five hundred thirty".