1275025265 has 4 divisors (see below), whose sum is σ = 1530030324. Its totient is φ = 1020020208.

The previous prime is 1275025253. The next prime is 1275025273. The reversal of 1275025265 is 5625205721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 517289536 + 757735729 = 22744^2 + 27527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275025265 - 2⁴ = 1275025249 is a prime.

It is a super-4 number, since 4×1275025265⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127502522 + ... + 127502531.

It is an arithmetic number, because the mean of its divisors is an integer number (382507581).

Almost surely, 2^1275025265 is an apocalyptic number.

It is an amenable number.

1275025265 is a deficient number, since it is larger than the sum of its proper divisors (255005059).

1275025265 is an equidigital number, since it uses as much as digits as its factorization.

1275025265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255005058.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 1275025265 is about 35707.4959217249. The cubic root of 1275025265 is about 1084.3586049671.

The spelling of 1275025265 in words is "one billion, two hundred seventy-five million, twenty-five thousand, two hundred sixty-five".