525689536 has 56 divisors (see below), whose sum is σ = 1081095120. Its totient is φ = 253440000.

The previous prime is 525689533. The next prime is 525689539. The reversal of 525689536 is 635986525.

It is an interprime number because it is at equal distance from previous prime (525689533) and next prime (525689539).

It is a self number, because there is not a number n which added to its sum of digits gives 525689536.

It is not an unprimeable number, because it can be changed into a prime (525689531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232411 + ... + 234661.

It is an arithmetic number, because the mean of its divisors is an integer number (19305270).

Almost surely, 2^525689536 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 525689536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540547560).

525689536 is an abundant number, since it is smaller than the sum of its proper divisors (555405584).

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

525689536 is a wasteful number, since it uses less digits than its factorization.

525689536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2383 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 49.

The square root of 525689536 is about 22927.9204464775. The cubic root of 525689536 is about 807.0673485454.

The spelling of 525689536 in words is "five hundred twenty-five million, six hundred eighty-nine thousand, five hundred thirty-six".