516971825 has 6 divisors (see below), whose sum is σ = 641045094. Its totient is φ = 413577440.

The previous prime is 516971801. The next prime is 516971827. The reversal of 516971825 is 528179615.

It can be written as a sum of positive squares in 3 ways, for example, as 45387169 + 471584656 = 6737^2 + 21716^2 .

It is not a de Polignac number, because 516971825 - 2⁶ = 516971761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516971827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10339412 + ... + 10339461.

It is an arithmetic number, because the mean of its divisors is an integer number (106840849).

Almost surely, 2^516971825 is an apocalyptic number.

It is an amenable number.

516971825 is a deficient number, since it is larger than the sum of its proper divisors (124073269).

516971825 is a wasteful number, since it uses less digits than its factorization.

516971825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20678883 (or 20678878 counting only the distinct ones).

The product of its digits is 151200, while the sum is 44.

The square root of 516971825 is about 22737.0144258212. The cubic root of 516971825 is about 802.5811552777.

The spelling of 516971825 in words is "five hundred sixteen million, nine hundred seventy-one thousand, eight hundred twenty-five".