525135172 has 24 divisors (see below), whose sum is σ = 962805312. Its totient is φ = 250140000.

The previous prime is 525135139. The next prime is 525135173. The reversal of 525135172 is 271531525.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (525135173) 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, 11722 + ... + 34462.

It is an arithmetic number, because the mean of its divisors is an integer number (40116888).

Almost surely, 2^525135172 is an apocalyptic number.

It is an amenable number.

525135172 is a deficient number, since it is larger than the sum of its proper divisors (437670140).

525135172 is a wasteful number, since it uses less digits than its factorization.

525135172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23019 (or 23017 counting only the distinct ones).

The product of its digits is 10500, while the sum is 31.

The square root of 525135172 is about 22915.8279798047. The cubic root of 525135172 is about 806.7835521114.

Adding to 525135172 its reverse (271531525), we get a palindrome (796666697).

The spelling of 525135172 in words is "five hundred twenty-five million, one hundred thirty-five thousand, one hundred seventy-two".