266025806 has 16 divisors (see below), whose sum is σ = 404637120. Its totient is φ = 131155200.

The previous prime is 266025803. The next prime is 266025827. The reversal of 266025806 is 608520662.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266025803) 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, 69515 + ... + 73241.

It is an arithmetic number, because the mean of its divisors is an integer number (25289820).

Almost surely, 2^266025806 is an apocalyptic number.

266025806 is a deficient number, since it is larger than the sum of its proper divisors (138611314).

266025806 is a wasteful number, since it uses less digits than its factorization.

266025806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 266025806 is about 16310.2975448028. The cubic root of 266025806 is about 643.1435559917.

The spelling of 266025806 in words is "two hundred sixty-six million, twenty-five thousand, eight hundred six".