265550005 has 16 divisors (see below), whose sum is σ = 364619520. Its totient is φ = 181873152.

The previous prime is 265549993. The next prime is 265550009. The reversal of 265550005 is 500055562.

It is a cyclic number.

It is not a de Polignac number, because 265550005 - 2¹¹ = 265547957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265550009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28432 + ... + 36598.

It is an arithmetic number, because the mean of its divisors is an integer number (22788720).

Almost surely, 2^265550005 is an apocalyptic number.

It is an amenable number.

265550005 is a deficient number, since it is larger than the sum of its proper divisors (99069515).

265550005 is an equidigital number, since it uses as much as digits as its factorization.

265550005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9108.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 265550005 is about 16295.7051090157. The cubic root of 265550005 is about 642.7598952603.

The spelling of 265550005 in words is "two hundred sixty-five million, five hundred fifty thousand, five".