266799025 has 24 divisors (see below), whose sum is σ = 343013760. Its totient is φ = 205719360.

The previous prime is 266799023. The next prime is 266799053. The reversal of 266799025 is 520997662.

It is not a de Polignac number, because 266799025 - 2¹ = 266799023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266799023) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 77031 + ... + 80419.

It is an arithmetic number, because the mean of its divisors is an integer number (14292240).

Almost surely, 2^266799025 is an apocalyptic number.

266799025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266799025 is a deficient number, since it is larger than the sum of its proper divisors (76214735).

266799025 is a wasteful number, since it uses less digits than its factorization.

266799025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513 (or 3508 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 266799025 is about 16333.9837455533. The cubic root of 266799025 is about 643.7660642612.

The spelling of 266799025 in words is "two hundred sixty-six million, seven hundred ninety-nine thousand, twenty-five".