2605522265 has 4 divisors (see below), whose sum is σ = 3126626724. Its totient is φ = 2084417808.

The previous prime is 2605522253. The next prime is 2605522279. The reversal of 2605522265 is 5622255062.

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 1597840729 + 1007681536 = 39973^2 + 31744^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605522265 - 2⁸ = 2605522009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260552222 + ... + 260552231.

It is an arithmetic number, because the mean of its divisors is an integer number (781656681).

Almost surely, 2^2605522265 is an apocalyptic number.

It is an amenable number.

2605522265 is a deficient number, since it is larger than the sum of its proper divisors (521104459).

2605522265 is an equidigital number, since it uses as much as digits as its factorization.

2605522265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521104458.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 2605522265 is about 51044.3166767859. The cubic root of 2605522265 is about 1376.0417036061.

The spelling of 2605522265 in words is "two billion, six hundred five million, five hundred twenty-two thousand, two hundred sixty-five".