8255665 has 16 divisors (see below), whose sum is σ = 10863360. Its totient is φ = 5973120.

The previous prime is 8255657. The next prime is 8255669. The reversal of 8255665 is 5665528.

It is not a de Polignac number, because 8255665 - 2³ = 8255657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8255669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19981 + ... + 20389.

It is an arithmetic number, because the mean of its divisors is an integer number (678960).

Almost surely, 2^8255665 is an apocalyptic number.

It is an amenable number.

8255665 is a deficient number, since it is larger than the sum of its proper divisors (2607695).

8255665 is a wasteful number, since it uses less digits than its factorization.

8255665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 72000, while the sum is 37.

The square root of 8255665 is about 2873.2673039590. The cubic root of 8255665 is about 202.1082401960.

It can be divided in two parts, 82556 and 65, that added together give a triangular number (82621 = T₄₀₆).

The spelling of 8255665 in words is "eight million, two hundred fifty-five thousand, six hundred sixty-five".