513065725 has 12 divisors (see below), whose sum is σ = 642041620. Its totient is φ = 406684800.

The previous prime is 513065713. The next prime is 513065743. The reversal of 513065725 is 527560315.

It can be written as a sum of positive squares in 6 ways, for example, as 4923961 + 508141764 = 2219^2 + 22542^2 .

It is not a de Polignac number, because 513065725 - 2⁹ = 513065213 is a prime.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 91416 + ... + 96865.

Almost surely, 2^513065725 is an apocalyptic number.

It is an amenable number.

513065725 is a deficient number, since it is larger than the sum of its proper divisors (128975895).

513065725 is a wasteful number, since it uses less digits than its factorization.

513065725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188400 (or 188395 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 513065725 is about 22650.9541741623. The cubic root of 513065725 is about 800.5546804273.

The spelling of 513065725 in words is "five hundred thirteen million, sixty-five thousand, seven hundred twenty-five".