525245231 has 4 divisors (see below), whose sum is σ = 600280272. Its totient is φ = 450210192.

The previous prime is 525245221. The next prime is 525245267. The reversal of 525245231 is 132542525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525245231 - 2¹⁰ = 525244207 is a prime.

It is a super-4 number, since 4×525245231⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525245194 and 525245203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525245221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37517510 + ... + 37517523.

It is an arithmetic number, because the mean of its divisors is an integer number (150070068).

Almost surely, 2^525245231 is an apocalyptic number.

525245231 is a deficient number, since it is larger than the sum of its proper divisors (75035041).

525245231 is an equidigital number, since it uses as much as digits as its factorization.

525245231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75035040.

The product of its digits is 12000, while the sum is 29.

The square root of 525245231 is about 22918.2292291529. The cubic root of 525245231 is about 806.8399106728.

Adding to 525245231 its reverse (132542525), we get a palindrome (657787756).

The spelling of 525245231 in words is "five hundred twenty-five million, two hundred forty-five thousand, two hundred thirty-one".