850683405625 has 45 divisors (see below), whose sum is σ = 1078950560457. Its totient is φ = 670493382000.

The previous prime is 850683405623. The next prime is 850683405629. The reversal of 850683405625 is 526504386058.

The square root of 850683405625 is 922325.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 66693579001 + 783989826624 = 258251^2 + 885432^2 .

It is not a de Polignac number, because 850683405625 - 2¹ = 850683405623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850683405623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1821591642 + ... + 1821592108.

Almost surely, 2^850683405625 is an apocalyptic number.

850683405625 is the 922325-th square number.

850683405625 is the 461163-rd centered octagonal number.

It is an amenable number.

850683405625 is a deficient number, since it is larger than the sum of its proper divisors (228267154832).

850683405625 is an frugal number, since it uses more digits than its factorization.

850683405625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 850683405625 in words is "eight hundred fifty billion, six hundred eighty-three million, four hundred five thousand, six hundred twenty-five".