266061325 has 24 divisors (see below), whose sum is σ = 339306408. Its totient is φ = 206868480.

The previous prime is 266061319. The next prime is 266061329. The reversal of 266061325 is 523160662.

It can be written as a sum of positive squares in 12 ways, for example, as 121749156 + 144312169 = 11034^2 + 12013^2 .

It is not a de Polignac number, because 266061325 - 2⁵ = 266061293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266061329) 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, 148837 + ... + 150613.

It is an arithmetic number, because the mean of its divisors is an integer number (14137767).

Almost surely, 2^266061325 is an apocalyptic number.

266061325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266061325 is a deficient number, since it is larger than the sum of its proper divisors (73245083).

266061325 is a wasteful number, since it uses less digits than its factorization.

266061325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953 (or 1948 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 266061325 is about 16311.3863604539. The cubic root of 266061325 is about 643.1721782767.

The spelling of 266061325 in words is "two hundred sixty-six million, sixty-one thousand, three hundred twenty-five".