1275203265 has 16 divisors (see below), whose sum is σ = 2331800448. Its totient is φ = 582950016.

The previous prime is 1275203263. The next prime is 1275203291. The reversal of 1275203265 is 5623025721.

It is not a de Polignac number, because 1275203265 - 2¹ = 1275203263 is a prime.

It is a super-2 number, since 2×1275203265² = 3252286734133320450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1275203263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6072292 + ... + 6072501.

It is an arithmetic number, because the mean of its divisors is an integer number (145737528).

Almost surely, 2^1275203265 is an apocalyptic number.

1275203265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275203265 is a deficient number, since it is larger than the sum of its proper divisors (1056597183).

1275203265 is a wasteful number, since it uses less digits than its factorization.

1275203265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144808.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1275203265 is about 35709.9883085951. The cubic root of 1275203265 is about 1084.4090632745.

Adding to 1275203265 its reverse (5623025721), we get a palindrome (6898228986).

The spelling of 1275203265 in words is "one billion, two hundred seventy-five million, two hundred three thousand, two hundred sixty-five".