1250020266 has 48 divisors (see below), whose sum is σ = 2752780800. Its totient is φ = 378132480.

The previous prime is 1250020243. The next prime is 1250020297. The reversal of 1250020266 is 6620200521.

It is a Curzon number.

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, 557175 + ... + 559413.

It is an arithmetic number, because the mean of its divisors is an integer number (57349600).

Almost surely, 2^1250020266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250020266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376390400).

1250020266 is an abundant number, since it is smaller than the sum of its proper divisors (1502760534).

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

1250020266 is a wasteful number, since it uses less digits than its factorization.

1250020266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035 (or 3024 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1250020266 is about 35355.6256626863. The cubic root of 1250020266 is about 1077.2231665543.

Adding to 1250020266 its reverse (6620200521), we get a palindrome (7870220787).

The spelling of 1250020266 in words is "one billion, two hundred fifty million, twenty thousand, two hundred sixty-six".