266061625 has 8 divisors (see below), whose sum is σ = 332045064. Its totient is φ = 212849200.

The previous prime is 266061619. The next prime is 266061641. The reversal of 266061625 is 526160662.

It can be written as a sum of positive squares in 4 ways, for example, as 39980329 + 226081296 = 6323^2 + 15036^2 .

It is not a de Polignac number, because 266061625 - 2¹³ = 266053433 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 1064122 + ... + 1064371.

It is an arithmetic number, because the mean of its divisors is an integer number (41505633).

Almost surely, 2^266061625 is an apocalyptic number.

266061625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266061625 is a deficient number, since it is larger than the sum of its proper divisors (65983439).

266061625 is an equidigital number, since it uses as much as digits as its factorization.

266061625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128508 (or 2128498 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 266061625 is about 16311.3955564814. The cubic root of 266061625 is about 643.1724200150.

The spelling of 266061625 in words is "two hundred sixty-six million, sixty-one thousand, six hundred twenty-five".