266250115 has 4 divisors (see below), whose sum is σ = 319500144. Its totient is φ = 213000088.

The previous prime is 266250077. The next prime is 266250119. The reversal of 266250115 is 511052662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511052662 = 2 ⋅255526331.

It is a cyclic number.

It is not a de Polignac number, because 266250115 - 2¹⁷ = 266119043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266250119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26625007 + ... + 26625016.

It is an arithmetic number, because the mean of its divisors is an integer number (79875036).

Almost surely, 2^266250115 is an apocalyptic number.

266250115 is a deficient number, since it is larger than the sum of its proper divisors (53250029).

266250115 is an equidigital number, since it uses as much as digits as its factorization.

266250115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53250028.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 266250115 is about 16317.1723959760. The cubic root of 266250115 is about 643.3242682344.

The spelling of 266250115 in words is "two hundred sixty-six million, two hundred fifty thousand, one hundred fifteen".