520225687 has 8 divisors (see below), whose sum is σ = 561221136. Its totient is φ = 480385152.

The previous prime is 520225679. The next prime is 520225703. The reversal of 520225687 is 786522025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520225687 - 2³ = 520225679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520223687) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 287793 + ... + 289594.

It is an arithmetic number, because the mean of its divisors is an integer number (70152642).

Almost surely, 2^520225687 is an apocalyptic number.

520225687 is a deficient number, since it is larger than the sum of its proper divisors (40995449).

520225687 is a wasteful number, since it uses less digits than its factorization.

520225687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577457.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 520225687 is about 22808.4564799988. The cubic root of 520225687 is about 804.2614714983.

The spelling of 520225687 in words is "five hundred twenty million, two hundred twenty-five thousand, six hundred eighty-seven".