525404568 has 128 divisors (see below), whose sum is σ = 1499097600. Its totient is φ = 152119296.

The previous prime is 525404543. The next prime is 525404569. The reversal of 525404568 is 865404525.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525404569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1558896 + ... + 1559232.

It is an arithmetic number, because the mean of its divisors is an integer number (11711700).

Almost surely, 2^525404568 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 525404568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749548800).

525404568 is an abundant number, since it is smaller than the sum of its proper divisors (973693032).

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

525404568 is a wasteful number, since it uses less digits than its factorization.

525404568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The square root of 525404568 is about 22921.7051721725. The cubic root of 525404568 is about 806.9214893626.

The spelling of 525404568 in words is "five hundred twenty-five million, four hundred four thousand, five hundred sixty-eight".