266309225 has 96 divisors (see below), whose sum is σ = 439138560. Its totient is φ = 155520000.

The previous prime is 266309171. The next prime is 266309257. The reversal of 266309225 is 522903662.

It is not a de Polignac number, because 266309225 - 2⁸ = 266308969 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2636675 + ... + 2636775.

It is an arithmetic number, because the mean of its divisors is an integer number (4574360).

Almost surely, 2^266309225 is an apocalyptic number.

266309225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266309225 is a deficient number, since it is larger than the sum of its proper divisors (172829335).

266309225 is a wasteful number, since it uses less digits than its factorization.

266309225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 266309225 is about 16318.9835774168. The cubic root of 266309225 is about 643.3718727005.

The spelling of 266309225 in words is "two hundred sixty-six million, three hundred nine thousand, two hundred twenty-five".