265720271 has 2 divisors, whose sum is σ = 265720272. Its totient is φ = 265720270.

The previous prime is 265720253. The next prime is 265720337. The reversal of 265720271 is 172027562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265720271 - 2⁶ = 265720207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265720201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132860135 + 132860136.

It is an arithmetic number, because the mean of its divisors is an integer number (132860136).

Almost surely, 2^265720271 is an apocalyptic number.

265720271 is a deficient number, since it is larger than the sum of its proper divisors (1).

265720271 is an equidigital number, since it uses as much as digits as its factorization.

265720271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 265720271 is about 16300.9285318352. The cubic root of 265720271 is about 642.8972413624.

The spelling of 265720271 in words is "two hundred sixty-five million, seven hundred twenty thousand, two hundred seventy-one".