265559855 has 16 divisors (see below), whose sum is σ = 348080544. Its totient is φ = 192890880.

The previous prime is 265559851. The next prime is 265559867. The reversal of 265559855 is 558955562.

It is a happy number.

It is not a de Polignac number, because 265559855 - 2² = 265559851 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 (265559851) 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, 48959 + ... + 54111.

It is an arithmetic number, because the mean of its divisors is an integer number (21755034).

Almost surely, 2^265559855 is an apocalyptic number.

265559855 is a deficient number, since it is larger than the sum of its proper divisors (82520689).

265559855 is a wasteful number, since it uses less digits than its factorization.

265559855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106.

The product of its digits is 2700000, while the sum is 50.

The square root of 265559855 is about 16296.0073330862. The cubic root of 265559855 is about 642.7678424223.

The spelling of 265559855 in words is "two hundred sixty-five million, five hundred fifty-nine thousand, eight hundred fifty-five".