520500340025 has 6 divisors (see below), whose sum is σ = 645420421662. Its totient is φ = 416400272000.

The previous prime is 520500339991. The next prime is 520500340033. The reversal of 520500340025 is 520043005025.

It can be written as a sum of positive squares in 3 ways, for example, as 8222318329 + 512278021696 = 90677^2 + 715736^2 .

It is not a de Polignac number, because 520500340025 - 2²⁰ = 520499291449 is a prime.

It is a super-2 number, since 2×520500340025² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520500339976 and 520500340003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10410006776 + ... + 10410006825.

It is an arithmetic number, because the mean of its divisors is an integer number (107570070277).

Almost surely, 2^520500340025 is an apocalyptic number.

It is an amenable number.

520500340025 is a deficient number, since it is larger than the sum of its proper divisors (124920081637).

520500340025 is a wasteful number, since it uses less digits than its factorization.

520500340025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20820013611 (or 20820013606 counting only the distinct ones).

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

The spelling of 520500340025 in words is "five hundred twenty billion, five hundred million, three hundred forty thousand, twenty-five".