522505225 has 36 divisors (see below), whose sum is σ = 749726320. Its totient is φ = 359964000.

The previous prime is 522505213. The next prime is 522505253.

522505225 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-522505225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 522505193 and 522505202.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 52930 + ... + 62020.

Almost surely, 2^522505225 is an apocalyptic number.

522505225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

522505225 is a deficient number, since it is larger than the sum of its proper divisors (227221095).

522505225 is a wasteful number, since it uses less digits than its factorization.

522505225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142 (or 9126 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 522505225 is about 22858.3731923337. The cubic root of 522505225 is about 805.4344709183.

Adding to 522505225 its product of nonzero digits (10000), we get a palindrome (522515225).

It can be divided in two parts, 52250 and 5225, that added together give a palindrome (57475).

The spelling of 522505225 in words is "five hundred twenty-two million, five hundred five thousand, two hundred twenty-five".