513155425 has 6 divisors (see below), whose sum is σ = 636312758. Its totient is φ = 410524320.

The previous prime is 513155413. The next prime is 513155437. The reversal of 513155425 is 524551315.

It is an interprime number because it is at equal distance from previous prime (513155413) and next prime (513155437).

It can be written as a sum of positive squares in 3 ways, for example, as 6185169 + 506970256 = 2487^2 + 22516^2 .

It is not a de Polignac number, because 513155425 - 2⁷ = 513155297 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10263084 + ... + 10263133.

Almost surely, 2^513155425 is an apocalyptic number.

It is an amenable number.

513155425 is a deficient number, since it is larger than the sum of its proper divisors (123157333).

513155425 is a wasteful number, since it uses less digits than its factorization.

513155425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20526227 (or 20526222 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 513155425 is about 22652.9341366632. The cubic root of 513155425 is about 800.6013317411.

The spelling of 513155425 in words is "five hundred thirteen million, one hundred fifty-five thousand, four hundred twenty-five".