1275265089 has 12 divisors (see below), whose sum is σ = 2105199616. Its totient is φ = 728722872.

The previous prime is 1275265067. The next prime is 1275265099. The reversal of 1275265089 is 9805625721.

It is not a de Polignac number, because 1275265089 - 2⁷ = 1275264961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275265049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10121089 + ... + 10121214.

Almost surely, 2^1275265089 is an apocalyptic number.

It is an amenable number.

1275265089 is a deficient number, since it is larger than the sum of its proper divisors (829934527).

1275265089 is a wasteful number, since it uses less digits than its factorization.

1275265089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20242316 (or 20242313 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1275265089 is about 35710.8539382636. The cubic root of 1275265089 is about 1084.4265876500.

It can be divided in two parts, 12752 and 65089, that added together give a square (77841 = 279²).

The spelling of 1275265089 in words is "one billion, two hundred seventy-five million, two hundred sixty-five thousand, eighty-nine".