1265280053 has 4 divisors (see below), whose sum is σ = 1331873760. Its totient is φ = 1198686348.

The previous prime is 1265280047. The next prime is 1265280187. The reversal of 1265280053 is 3500825621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1265280053 - 2²⁶ = 1198171189 is a prime.

It is a super-2 number, since 2×1265280053² = 3201867225039365618, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265280043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33296825 + ... + 33296862.

It is an arithmetic number, because the mean of its divisors is an integer number (332968440).

Almost surely, 2^1265280053 is an apocalyptic number.

It is an amenable number.

1265280053 is a deficient number, since it is larger than the sum of its proper divisors (66593707).

1265280053 is an equidigital number, since it uses as much as digits as its factorization.

1265280053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66593706.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1265280053 is about 35570.7752656587. The cubic root of 1265280053 is about 1081.5888972629.

The spelling of 1265280053 in words is "one billion, two hundred sixty-five million, two hundred eighty thousand, fifty-three".