525529728 has 64 divisors (see below), whose sum is σ = 1551052800. Its totient is φ = 175175424.

The previous prime is 525529727. The next prime is 525529733. The reversal of 525529728 is 827925525.

525529728 is a `hidden beast` number, since 5 + 2 + 552 + 97 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (525529727) 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, 72576 + ... + 79487.

It is an arithmetic number, because the mean of its divisors is an integer number (24235200).

Almost surely, 2^525529728 is an apocalyptic number.

It is an amenable number.

525529728 is an abundant number, since it is smaller than the sum of its proper divisors (1025523072).

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

525529728 is a wasteful number, since it uses less digits than its factorization.

525529728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152086 (or 152068 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 525529728 is about 22924.4351729765. The cubic root of 525529728 is about 806.9855582606.

The spelling of 525529728 in words is "five hundred twenty-five million, five hundred twenty-nine thousand, seven hundred twenty-eight".