516211238425 has 6 divisors (see below), whose sum is σ = 640101935678. Its totient is φ = 412968990720.

The previous prime is 516211238407. The next prime is 516211238437. The reversal of 516211238425 is 524832112615.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 167147692569 + 349063545856 = 408837^2 + 590816^2 .

It is a de Polignac number, because none of the positive numbers 2^k-516211238425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 10324224744 + ... + 10324224793.

Almost surely, 2^516211238425 is an apocalyptic number.

It is an amenable number.

516211238425 is a deficient number, since it is larger than the sum of its proper divisors (123890697253).

516211238425 is a wasteful number, since it uses less digits than its factorization.

516211238425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20648449547 (or 20648449542 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The spelling of 516211238425 in words is "five hundred sixteen billion, two hundred eleven million, two hundred thirty-eight thousand, four hundred twenty-five".