525172806 has 96 divisors (see below), whose sum is σ = 1290556800. Its totient is φ = 153342720.

The previous prime is 525172801. The next prime is 525172807. The reversal of 525172806 is 608271525.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525172801) 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 47 ways as a sum of consecutive naturals, for example, 342261 + ... + 343791.

It is an arithmetic number, because the mean of its divisors is an integer number (13443300).

Almost surely, 2^525172806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525172806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645278400).

525172806 is an abundant number, since it is smaller than the sum of its proper divisors (765383994).

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

525172806 is a wasteful number, since it uses less digits than its factorization.

525172806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 525172806 is about 22916.6491005993. The cubic root of 525172806 is about 806.8028244617.

The spelling of 525172806 in words is "five hundred twenty-five million, one hundred seventy-two thousand, eight hundred six".