2605265155 has 4 divisors (see below), whose sum is σ = 3126318192. Its totient is φ = 2084212120.

The previous prime is 2605265137. The next prime is 2605265233. The reversal of 2605265155 is 5515625062.

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

It is not a de Polignac number, because 2605265155 - 2⁹ = 2605264643 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260526511 + ... + 260526520.

It is an arithmetic number, because the mean of its divisors is an integer number (781579548).

Almost surely, 2^2605265155 is an apocalyptic number.

2605265155 is a deficient number, since it is larger than the sum of its proper divisors (521053037).

2605265155 is an equidigital number, since it uses as much as digits as its factorization.

2605265155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521053036.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2605265155 is about 51041.7981168375. The cubic root of 2605265155 is about 1375.9964400358.

The spelling of 2605265155 in words is "two billion, six hundred five million, two hundred sixty-five thousand, one hundred fifty-five".