266225905 has 16 divisors (see below), whose sum is σ = 349411968. Its totient is φ = 193120000.

The previous prime is 266225879. The next prime is 266225917. The reversal of 266225905 is 509522662.

It is not a de Polignac number, because 266225905 - 2⁵ = 266225873 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 16020 + ... + 28090.

It is an arithmetic number, because the mean of its divisors is an integer number (21838248).

Almost surely, 2^266225905 is an apocalyptic number.

It is an amenable number.

266225905 is a deficient number, since it is larger than the sum of its proper divisors (83186063).

266225905 is a wasteful number, since it uses less digits than its factorization.

266225905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12488.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 266225905 is about 16316.4305226358. The cubic root of 266225905 is about 643.3047685838.

The spelling of 266225905 in words is "two hundred sixty-six million, two hundred twenty-five thousand, nine hundred five".