266505250 has 32 divisors (see below), whose sum is σ = 544257792. Its totient is φ = 96910000.

The previous prime is 266505247. The next prime is 266505251. The reversal of 266505250 is 52505662.

It is not an unprimeable number, because it can be changed into a prime (266505251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45706 + ... + 51205.

It is an arithmetic number, because the mean of its divisors is an integer number (17008056).

Almost surely, 2^266505250 is an apocalyptic number.

266505250 is an abundant number, since it is smaller than the sum of its proper divisors (277752542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266505250 is a wasteful number, since it uses less digits than its factorization.

266505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96939 (or 96929 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 266505250 is about 16324.9885145442. The cubic root of 266505250 is about 643.5296917921.

The spelling of 266505250 in words is "two hundred sixty-six million, five hundred five thousand, two hundred fifty".