2605265 has 16 divisors (see below), whose sum is σ = 3402000. Its totient is φ = 1903872.

The previous prime is 2605259. The next prime is 2605289. The reversal of 2605265 is 5625062.

2605265 = 72² + 73² + ... + 201².

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1203409 + 1401856 = 1097^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605265 - 2⁶ = 2605201 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9551 + ... + 9819.

It is an arithmetic number, because the mean of its divisors is an integer number (212625).

2^2605265 is an apocalyptic number.

It is an amenable number.

2605265 is a deficient number, since it is larger than the sum of its proper divisors (796735).

2605265 is a wasteful number, since it uses less digits than its factorization.

2605265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2605265 is about 1614.0833311821. The cubic root of 2605265 is about 137.5996412748.

It can be divided in two parts, 260 and 5265, that multiplied together give a square (1368900 = 1170²).

The spelling of 2605265 in words is "two million, six hundred five thousand, two hundred sixty-five".