265055566 has 8 divisors (see below), whose sum is σ = 397668960. Its totient is φ = 132499248.

The previous prime is 265055521. The next prime is 265055587. The reversal of 265055566 is 665550562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330 + ... + 23026.

It is an arithmetic number, because the mean of its divisors is an integer number (49708620).

Almost surely, 2^265055566 is an apocalyptic number.

265055566 is a deficient number, since it is larger than the sum of its proper divisors (132613394).

265055566 is a wasteful number, since it uses less digits than its factorization.

265055566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28538.

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 265055566 is about 16280.5272027659. The cubic root of 265055566 is about 642.3607199594.

The spelling of 265055566 in words is "two hundred sixty-five million, fifty-five thousand, five hundred sixty-six".