265288213 has 4 divisors (see below), whose sum is σ = 280893420. Its totient is φ = 249683008.

The previous prime is 265288183. The next prime is 265288229. The reversal of 265288213 is 312882562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113678244 + 151609969 = 10662^2 + 12313^2 .

It is a cyclic number.

It is not a de Polignac number, because 265288213 - 2⁵ = 265288181 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 (265288613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7802578 + ... + 7802611.

It is an arithmetic number, because the mean of its divisors is an integer number (70223355).

Almost surely, 2^265288213 is an apocalyptic number.

It is an amenable number.

265288213 is a deficient number, since it is larger than the sum of its proper divisors (15605207).

265288213 is a wasteful number, since it uses less digits than its factorization.

265288213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15605206.

The product of its digits is 46080, while the sum is 37.

The square root of 265288213 is about 16287.6705823761. The cubic root of 265288213 is about 642.5486045785.

The spelling of 265288213 in words is "two hundred sixty-five million, two hundred eighty-eight thousand, two hundred thirteen".