265515285 has 16 divisors (see below), whose sum is σ = 485513856. Its totient is φ = 121378368.

The previous prime is 265515259. The next prime is 265515301. The reversal of 265515285 is 582515562.

It is not a de Polignac number, because 265515285 - 2⁹ = 265514773 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, 1264254 + ... + 1264463.

It is an arithmetic number, because the mean of its divisors is an integer number (30344616).

Almost surely, 2^265515285 is an apocalyptic number.

It is an amenable number.

265515285 is a deficient number, since it is larger than the sum of its proper divisors (219998571).

265515285 is a wasteful number, since it uses less digits than its factorization.

265515285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528732.

The product of its digits is 120000, while the sum is 39.

The square root of 265515285 is about 16294.6397628177. The cubic root of 265515285 is about 642.7318809556.

The spelling of 265515285 in words is "two hundred sixty-five million, five hundred fifteen thousand, two hundred eighty-five".