265283261 has 2 divisors, whose sum is σ = 265283262. Its totient is φ = 265283260.

The previous prime is 265283257. The next prime is 265283269. The reversal of 265283261 is 162382562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261307225 + 3976036 = 16165^2 + 1994^2 .

It is a cyclic number.

It is not a de Polignac number, because 265283261 - 2² = 265283257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265283269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132641630 + 132641631.

It is an arithmetic number, because the mean of its divisors is an integer number (132641631).

Almost surely, 2^265283261 is an apocalyptic number.

It is an amenable number.

265283261 is a deficient number, since it is larger than the sum of its proper divisors (1).

265283261 is an equidigital number, since it uses as much as digits as its factorization.

265283261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 265283261 is about 16287.5185648398. The cubic root of 265283261 is about 642.5446065111.

The spelling of 265283261 in words is "two hundred sixty-five million, two hundred eighty-three thousand, two hundred sixty-one".