1263265275 has 12 divisors (see below), whose sum is σ = 2088598712. Its totient is φ = 673741440.

The previous prime is 1263265273. The next prime is 1263265301. The reversal of 1263265275 is 5725623621.

It is a happy number.

It is not a de Polignac number, because 1263265275 - 2¹ = 1263265273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263265273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8421694 + ... + 8421843.

Almost surely, 2^1263265275 is an apocalyptic number.

1263265275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1263265275 is a deficient number, since it is larger than the sum of its proper divisors (825333437).

1263265275 is a wasteful number, since it uses less digits than its factorization.

1263265275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843550 (or 16843545 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 1263265275 is about 35542.4432896783. The cubic root of 1263265275 is about 1081.0145002609.

Adding to 1263265275 its reverse (5725623621), we get a palindrome (6988888896).

The spelling of 1263265275 in words is "one billion, two hundred sixty-three million, two hundred sixty-five thousand, two hundred seventy-five".