1266582285 has 32 divisors (see below), whose sum is σ = 2349607680. Its totient is φ = 646138944.

The previous prime is 1266582211. The next prime is 1266582293. The reversal of 1266582285 is 5822856621.

It is a happy number.

1266582285 is a `hidden beast` number, since 1 + 2 + 66 + 582 + 2 + 8 + 5 = 666.

It is not a de Polignac number, because 1266582285 - 2⁸ = 1266582029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1266582285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200854 + ... + 207063.

It is an arithmetic number, because the mean of its divisors is an integer number (73425240).

Almost surely, 2^1266582285 is an apocalyptic number.

1266582285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266582285 is a deficient number, since it is larger than the sum of its proper divisors (1083025395).

1266582285 is a wasteful number, since it uses less digits than its factorization.

1266582285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407954 (or 407948 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 1266582285 is about 35589.0753602844. The cubic root of 1266582285 is about 1081.9598287789.

The spelling of 1266582285 in words is "one billion, two hundred sixty-six million, five hundred eighty-two thousand, two hundred eighty-five".