520973225 has 6 divisors (see below), whose sum is σ = 646006830. Its totient is φ = 416778560.

The previous prime is 520973213. The next prime is 520973227. The reversal of 520973225 is 522379025.

It can be written as a sum of positive squares in 3 ways, for example, as 1315609 + 519657616 = 1147^2 + 22796^2 .

It is not a de Polignac number, because 520973225 - 2¹⁰ = 520972201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520973227) 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 5 ways as a sum of consecutive naturals, for example, 10419440 + ... + 10419489.

It is an arithmetic number, because the mean of its divisors is an integer number (107667805).

Almost surely, 2^520973225 is an apocalyptic number.

It is an amenable number.

520973225 is a deficient number, since it is larger than the sum of its proper divisors (125033605).

520973225 is a wasteful number, since it uses less digits than its factorization.

520973225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20838939 (or 20838934 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 520973225 is about 22824.8378964671. The cubic root of 520973225 is about 804.6465148133.

The spelling of 520973225 in words is "five hundred twenty million, nine hundred seventy-three thousand, two hundred twenty-five".