1265648275 has 6 divisors (see below), whose sum is σ = 1569403892. Its totient is φ = 1012518600.

The previous prime is 1265648269. The next prime is 1265648287. The reversal of 1265648275 is 5728465621.

It is not a de Polignac number, because 1265648275 - 2¹⁷ = 1265517203 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25312941 + ... + 25312990.

Almost surely, 2^1265648275 is an apocalyptic number.

1265648275 is a deficient number, since it is larger than the sum of its proper divisors (303755617).

1265648275 is an equidigital number, since it uses as much as digits as its factorization.

1265648275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50625941 (or 50625936 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 1265648275 is about 35575.9507954461. The cubic root of 1265648275 is about 1081.6938084768.

The spelling of 1265648275 in words is "one billion, two hundred sixty-five million, six hundred forty-eight thousand, two hundred seventy-five".