2653261265 has 8 divisors (see below), whose sum is σ = 3187113000. Its totient is φ = 2120476032.

The previous prime is 2653261241. The next prime is 2653261277. The reversal of 2653261265 is 5621623562.

2653261265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1014549904 + 1638711361 = 31852^2 + 40481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2653261265 - 2¹⁰ = 2653260241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261140 + ... + 271109.

It is an arithmetic number, because the mean of its divisors is an integer number (398389125).

Almost surely, 2^2653261265 is an apocalyptic number.

It is an amenable number.

2653261265 is a deficient number, since it is larger than the sum of its proper divisors (533851735).

2653261265 is an equidigital number, since it uses as much as digits as its factorization.

2653261265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533251.

The product of its digits is 129600, while the sum is 38.

The square root of 2653261265 is about 51509.8171710986. The cubic root of 2653261265 is about 1384.3949474338.

The spelling of 2653261265 in words is "two billion, six hundred fifty-three million, two hundred sixty-one thousand, two hundred sixty-five".