1275275001265 has 16 divisors (see below), whose sum is σ = 1640860174080. Its totient is φ = 948052535040.

The previous prime is 1275275001263. The next prime is 1275275001289. The reversal of 1275275001265 is 5621005725721.

It is not a de Polignac number, because 1275275001265 - 2¹ = 1275275001263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1275275001263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94950471 + ... + 94963900.

It is an arithmetic number, because the mean of its divisors is an integer number (102553760880).

Almost surely, 2^{1275275001265} is an apocalyptic number.

It is an amenable number.

1275275001265 is a deficient number, since it is larger than the sum of its proper divisors (365585172815).

1275275001265 is a wasteful number, since it uses less digits than its factorization.

1275275001265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189914472.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 1275275001265 in words is "one trillion, two hundred seventy-five billion, two hundred seventy-five million, one thousand, two hundred sixty-five".