1205250066 has 48 divisors (see below), whose sum is σ = 2770560000. Its totient is φ = 377594784.

The previous prime is 1205250049. The next prime is 1205250077. The reversal of 1205250066 is 6600525021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29560 + ... + 57308.

It is an arithmetic number, because the mean of its divisors is an integer number (57720000).

Almost surely, 2^1205250066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205250066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385280000).

1205250066 is an abundant number, since it is smaller than the sum of its proper divisors (1565309934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205250066 is a wasteful number, since it uses less digits than its factorization.

1205250066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27903 (or 27900 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1205250066 is about 34716.7116242308. The cubic root of 1205250066 is about 1064.2060445042.

Adding to 1205250066 its reverse (6600525021), we get a palindrome (7805775087).

The spelling of 1205250066 in words is "one billion, two hundred five million, two hundred fifty thousand, sixty-six".