522320525 has 12 divisors (see below), whose sum is σ = 663475764. Its totient is φ = 407664000.

The previous prime is 522320521. The next prime is 522320567. The reversal of 522320525 is 525023225.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 209844196 + 312476329 = 14486^2 + 17677^2 .

It is not a de Polignac number, because 522320525 - 2² = 522320521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 522320494 and 522320503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522320521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253766 + ... + 255815.

It is an arithmetic number, because the mean of its divisors is an integer number (55289647).

Almost surely, 2^522320525 is an apocalyptic number.

It is an amenable number.

522320525 is a deficient number, since it is larger than the sum of its proper divisors (141155239).

522320525 is a wasteful number, since it uses less digits than its factorization.

522320525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509632 (or 509627 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 522320525 is about 22854.3327402049. The cubic root of 522320525 is about 805.3395555810.

The spelling of 522320525 in words is "five hundred twenty-two million, three hundred twenty thousand, five hundred twenty-five".