265071081 has 16 divisors (see below), whose sum is σ = 385963200. Its totient is φ = 160480320.

The previous prime is 265071077. The next prime is 265071083. The reversal of 265071081 is 180170562.

It is not a de Polignac number, because 265071081 - 2² = 265071077 is a prime.

It is a super-2 number, since 2×265071081² = 140525355965017122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (265071083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32395 + ... + 39743.

It is an arithmetic number, because the mean of its divisors is an integer number (24122700).

Almost surely, 2^265071081 is an apocalyptic number.

It is an amenable number.

265071081 is a deficient number, since it is larger than the sum of its proper divisors (120892119).

265071081 is a wasteful number, since it uses less digits than its factorization.

265071081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8456.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 265071081 is about 16281.0036852769. The cubic root of 265071081 is about 642.3732532209.

The spelling of 265071081 in words is "two hundred sixty-five million, seventy-one thousand, eighty-one".