516663625 has 16 divisors (see below), whose sum is σ = 645780096. Its totient is φ = 412700400.

The previous prime is 516663611. The next prime is 516663647. The reversal of 516663625 is 526366615.

It is a happy number.

It is not a de Polignac number, because 516663625 - 2¹¹ = 516661577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90094 + ... + 95656.

It is an arithmetic number, because the mean of its divisors is an integer number (40361256).

Almost surely, 2^516663625 is an apocalyptic number.

It is an amenable number.

516663625 is a deficient number, since it is larger than the sum of its proper divisors (129116471).

516663625 is an equidigital number, since it uses as much as digits as its factorization.

516663625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321 (or 6311 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 516663625 is about 22730.2359204651. The cubic root of 516663625 is about 802.4216335713.

The spelling of 516663625 in words is "five hundred sixteen million, six hundred sixty-three thousand, six hundred twenty-five".