266026225 has 6 divisors (see below), whose sum is σ = 329872550. Its totient is φ = 212820960.

The previous prime is 266026199. The next prime is 266026231. The reversal of 266026225 is 522620662.

It can be written as a sum of positive squares in 3 ways, for example, as 7845601 + 258180624 = 2801^2 + 16068^2 .

It is not a de Polignac number, because 266026225 - 2⁹ = 266025713 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 5320500 + ... + 5320549.

Almost surely, 2^266026225 is an apocalyptic number.

266026225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266026225 is a deficient number, since it is larger than the sum of its proper divisors (63846325).

266026225 is a wasteful number, since it uses less digits than its factorization.

266026225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641059 (or 10641054 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 266026225 is about 16310.3103894439. The cubic root of 266026225 is about 643.1438936494.

Adding to 266026225 its reverse (522620662), we get a palindrome (788646887).

The spelling of 266026225 in words is "two hundred sixty-six million, twenty-six thousand, two hundred twenty-five".