520522425 has 18 divisors (see below), whose sum is σ = 932313902. Its totient is φ = 277611840.

The previous prime is 520522393. The next prime is 520522427. The reversal of 520522425 is 524225025.

It can be written as a sum of positive squares in 3 ways, for example, as 26749584 + 493772841 = 5172^2 + 22221^2 .

It is not a de Polignac number, because 520522425 - 2⁵ = 520522393 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520522427) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1156492 + ... + 1156941.

Almost surely, 2^520522425 is an apocalyptic number.

It is an amenable number.

520522425 is a deficient number, since it is larger than the sum of its proper divisors (411791477).

520522425 is a wasteful number, since it uses less digits than its factorization.

520522425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313449 (or 2313441 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 520522425 is about 22814.9605522341. The cubic root of 520522425 is about 804.4143600006.

The spelling of 520522425 in words is "five hundred twenty million, five hundred twenty-two thousand, four hundred twenty-five".