265022166 has 16 divisors (see below), whose sum is σ = 530535600. Its totient is φ = 88258848.

The previous prime is 265022161. The next prime is 265022167. The reversal of 265022166 is 661220562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265022161) 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 7 ways as a sum of consecutive naturals, for example, 13261 + ... + 26568.

It is an arithmetic number, because the mean of its divisors is an integer number (33158475).

Almost surely, 2^265022166 is an apocalyptic number.

265022166 is an abundant number, since it is smaller than the sum of its proper divisors (265513434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265022166 is a wasteful number, since it uses less digits than its factorization.

265022166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40943.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 265022166 is about 16279.5014051414. The cubic root of 265022166 is about 642.3337372534. Note that the first 3 decimals are identical.

The spelling of 265022166 in words is "two hundred sixty-five million, twenty-two thousand, one hundred sixty-six".