265645255 has 4 divisors (see below), whose sum is σ = 318774312. Its totient is φ = 212516200.

The previous prime is 265645253. The next prime is 265645277. The reversal of 265645255 is 552546562.

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

It is not a de Polignac number, because 265645255 - 2¹ = 265645253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265645253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26564521 + ... + 26564530.

It is an arithmetic number, because the mean of its divisors is an integer number (79693578).

Almost surely, 2^265645255 is an apocalyptic number.

265645255 is a deficient number, since it is larger than the sum of its proper divisors (53129057).

265645255 is an equidigital number, since it uses as much as digits as its factorization.

265645255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53129056.

The product of its digits is 360000, while the sum is 40.

The square root of 265645255 is about 16298.6273961951. The cubic root of 265645255 is about 642.8367364833.

The spelling of 265645255 in words is "two hundred sixty-five million, six hundred forty-five thousand, two hundred fifty-five".