1206265205 has 8 divisors (see below), whose sum is σ = 1448953272. Its totient is φ = 964055488.

The previous prime is 1206265187. The next prime is 1206265259. The reversal of 1206265205 is 5025626021.

It can be written as a sum of positive squares in 4 ways, for example, as 1203409 + 1205061796 = 1097^2 + 34714^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1206265205 - 2¹² = 1206261109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114014 + ... + 124143.

It is an arithmetic number, because the mean of its divisors is an integer number (181119159).

Almost surely, 2^1206265205 is an apocalyptic number.

It is an amenable number.

1206265205 is a deficient number, since it is larger than the sum of its proper divisors (242688067).

1206265205 is a wasteful number, since it uses less digits than its factorization.

1206265205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239175.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1206265205 is about 34731.3288689045. The cubic root of 1206265205 is about 1064.5047415486.

The spelling of 1206265205 in words is "one billion, two hundred six million, two hundred sixty-five thousand, two hundred five".