265046009 has 2 divisors, whose sum is σ = 265046010. Its totient is φ = 265046008.

The previous prime is 265045961. The next prime is 265046011. The reversal of 265046009 is 900640562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134629609 + 130416400 = 11603^2 + 11420^2 .

It is a cyclic number.

It is not a de Polignac number, because 265046009 - 2¹² = 265041913 is a prime.

Together with 265046011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265046039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132523004 + 132523005.

It is an arithmetic number, because the mean of its divisors is an integer number (132523005).

Almost surely, 2^265046009 is an apocalyptic number.

It is an amenable number.

265046009 is a deficient number, since it is larger than the sum of its proper divisors (1).

265046009 is an equidigital number, since it uses as much as digits as its factorization.

265046009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 265046009 is about 16280.2336899689. The cubic root of 265046009 is about 642.3529994208.

The spelling of 265046009 in words is "two hundred sixty-five million, forty-six thousand, nine".