51025206208 has 28 divisors (see below), whose sum is σ = 101275377840. Its totient is φ = 25507000832.

The previous prime is 51025206181. The next prime is 51025206209. The reversal of 51025206208 is 80260252015.

It is a self number, because there is not a number n which added to its sum of digits gives 51025206208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025206209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 214260 + ... + 384652.

It is an arithmetic number, because the mean of its divisors is an integer number (3616977780).

Almost surely, 2^51025206208 is an apocalyptic number.

It is an amenable number.

51025206208 is a deficient number, since it is larger than the sum of its proper divisors (50250171632).

51025206208 is a wasteful number, since it uses less digits than its factorization.

51025206208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175084 (or 175074 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 51025206208 in words is "fifty-one billion, twenty-five million, two hundred six thousand, two hundred eight".