520225999648 has 12 divisors (see below), whose sum is σ = 1024194936870. Its totient is φ = 260112999808.

The previous prime is 520225999609. The next prime is 520225999663. The reversal of 520225999648 is 846999522025.

It can be written as a sum of positive squares in only one way, i.e., 422224444944 + 98001554704 = 649788^2 + 313052^2 .

It is a super-2 number, since 2×520225999648² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8128531213 + ... + 8128531276.

Almost surely, 2^520225999648 is an apocalyptic number.

It is an amenable number.

520225999648 is a deficient number, since it is larger than the sum of its proper divisors (503968937222).

520225999648 is a wasteful number, since it uses less digits than its factorization.

520225999648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16257062499 (or 16257062491 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 520225999648 in words is "five hundred twenty billion, two hundred twenty-five million, nine hundred ninety-nine thousand, six hundred forty-eight".