1275050985 has 16 divisors (see below), whose sum is σ = 2197011264. Its totient is φ = 627717312.

The previous prime is 1275050963. The next prime is 1275050989. The reversal of 1275050985 is 5890505721.

It is not a de Polignac number, because 1275050985 - 2⁸ = 1275050729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1275050989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3269167 + ... + 3269556.

It is an arithmetic number, because the mean of its divisors is an integer number (137313204).

Almost surely, 2^1275050985 is an apocalyptic number.

1275050985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275050985 is a deficient number, since it is larger than the sum of its proper divisors (921960279).

1275050985 is a wasteful number, since it uses less digits than its factorization.

1275050985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538744.

The product of its (nonzero) digits is 126000, while the sum is 42.

The square root of 1275050985 is about 35707.8560683780. The cubic root of 1275050985 is about 1084.3658961993.

The spelling of 1275050985 in words is "one billion, two hundred seventy-five million, fifty thousand, nine hundred eighty-five".