265500165 has 16 divisors (see below), whose sum is σ = 485486208. Its totient is φ = 121371456.

The previous prime is 265500143. The next prime is 265500173. The reversal of 265500165 is 561005562.

It is not a de Polignac number, because 265500165 - 2⁸ = 265499909 is a prime.

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, 1264182 + ... + 1264391.

It is an arithmetic number, because the mean of its divisors is an integer number (30342888).

Almost surely, 2^265500165 is an apocalyptic number.

It is an amenable number.

265500165 is a deficient number, since it is larger than the sum of its proper divisors (219986043).

265500165 is a wasteful number, since it uses less digits than its factorization.

265500165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528588.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 265500165 is about 16294.1757999599. The cubic root of 265500165 is about 642.7196804144.

The spelling of 265500165 in words is "two hundred sixty-five million, five hundred thousand, one hundred sixty-five".