206320350625 has 15 divisors (see below), whose sum is σ = 257832100911. Its totient is φ = 165047196000.

The previous prime is 206320350623. The next prime is 206320350671. The reversal of 206320350625 is 526053023602.

The square root of 206320350625 is 454225.

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

It can be written as a sum of positive squares in 7 ways, for example, as 203972366689 + 2347983936 = 451633^2 + 48456^2 .

It is not a de Polignac number, because 206320350625 - 2¹ = 206320350623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206320350623) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 11346541 + ... + 11364709.

Almost surely, 2^206320350625 is an apocalyptic number.

206320350625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206320350625 is the 454225-th square number.

206320350625 is the 227113-rd centered octagonal number.

It is an amenable number.

206320350625 is a deficient number, since it is larger than the sum of its proper divisors (51511750286).

206320350625 is an frugal number, since it uses more digits than its factorization.

206320350625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36358 (or 18174 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 206320350625 in words is "two hundred six billion, three hundred twenty million, three hundred fifty thousand, six hundred twenty-five".