266313399225 has 24 divisors (see below), whose sum is σ = 443518740960. Its totient is φ = 140997064320.

The previous prime is 266313399197. The next prime is 266313399269. The reversal of 266313399225 is 522993313662.

It is not a de Polignac number, because 266313399225 - 2¹³ = 266313391033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12949015 + ... + 12969564.

It is an arithmetic number, because the mean of its divisors is an integer number (18479947540).

Almost surely, 2^266313399225 is an apocalyptic number.

266313399225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266313399225 is a deficient number, since it is larger than the sum of its proper divisors (177205341735).

266313399225 is a wasteful number, since it uses less digits than its factorization.

266313399225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25918729 (or 25918724 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 51.

The spelling of 266313399225 in words is "two hundred sixty-six billion, three hundred thirteen million, three hundred ninety-nine thousand, two hundred twenty-five".