851725418146 has 8 divisors (see below), whose sum is σ = 1277921451564. Its totient is φ = 425751600960.

The previous prime is 851725418143. The next prime is 851725418147. The reversal of 851725418146 is 641814527158.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 848721830121 + 3003588025 = 921261^2 + 54805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 851725418093 and 851725418102.

It is not an unprimeable number, because it can be changed into a prime (851725418143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55544475 + ... + 55559806.

Almost surely, 2^851725418146 is an apocalyptic number.

851725418146 is a deficient number, since it is larger than the sum of its proper divisors (426196033418).

851725418146 is a wasteful number, since it uses less digits than its factorization.

851725418146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111108116.

The product of its digits is 2150400, while the sum is 52.

The spelling of 851725418146 in words is "eight hundred fifty-one billion, seven hundred twenty-five million, four hundred eighteen thousand, one hundred forty-six".