265090081 has 2 divisors, whose sum is σ = 265090082. Its totient is φ = 265090080.

The previous prime is 265090069. The next prime is 265090093. The reversal of 265090081 is 180090562.

It is a balanced prime because it is at equal distance from previous prime (265090069) and next prime (265090093).

It can be written as a sum of positive squares in only one way, i.e., 141991056 + 123099025 = 11916^2 + 11095^2 .

It is a cyclic number.

It is not a de Polignac number, because 265090081 - 2¹⁹ = 264565793 is a prime.

It is a super-2 number, since 2×265090081² = 140545502089173122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265090031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132545040 + 132545041.

It is an arithmetic number, because the mean of its divisors is an integer number (132545041).

Almost surely, 2^265090081 is an apocalyptic number.

It is an amenable number.

265090081 is a deficient number, since it is larger than the sum of its proper divisors (1).

265090081 is an equidigital number, since it uses as much as digits as its factorization.

265090081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 265090081 is about 16281.5871769309. The cubic root of 265090081 is about 642.3886010541.

The spelling of 265090081 in words is "two hundred sixty-five million, ninety thousand, eighty-one".