513650125 has 8 divisors (see below), whose sum is σ = 641035512. Its totient is φ = 410920000.

The previous prime is 513650107. The next prime is 513650143. The reversal of 513650125 is 521056315.

It is an interprime number because it is at equal distance from previous prime (513650107) and next prime (513650143).

It can be written as a sum of positive squares in 4 ways, for example, as 132112036 + 381538089 = 11494^2 + 19533^2 .

It is a de Polignac number, because none of the positive numbers 2^k-513650125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513650093 and 513650102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054476 + ... + 2054725.

It is an arithmetic number, because the mean of its divisors is an integer number (80129439).

Almost surely, 2^513650125 is an apocalyptic number.

It is an amenable number.

513650125 is a deficient number, since it is larger than the sum of its proper divisors (127385387).

513650125 is an equidigital number, since it uses as much as digits as its factorization.

513650125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109216 (or 4109206 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 513650125 is about 22663.8506216397. The cubic root of 513650125 is about 800.8585184572.

The spelling of 513650125 in words is "five hundred thirteen million, six hundred fifty thousand, one hundred twenty-five".