1266275250 has 48 divisors (see below), whose sum is σ = 3424014360. Its totient is φ = 337672800.

The previous prime is 1266275249. The next prime is 1266275291. The reversal of 1266275250 is 525726621.

1266275250 is a `hidden beast` number, since 1 + 2 + 6 + 627 + 5 + 25 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 828921681 + 437353569 = 28791^2 + 20913^2 .

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, 279145 + ... + 283644.

Almost surely, 2^1266275250 is an apocalyptic number.

1266275250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266275250 is an abundant number, since it is smaller than the sum of its proper divisors (2157739110).

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

1266275250 is a wasteful number, since it uses less digits than its factorization.

1266275250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562812 (or 562799 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 1266275250 is about 35584.7614857821. The cubic root of 1266275250 is about 1081.8723949588.

The spelling of 1266275250 in words is "one billion, two hundred sixty-six million, two hundred seventy-five thousand, two hundred fifty".