265383145 has 4 divisors (see below), whose sum is σ = 318459780. Its totient is φ = 212306512.

The previous prime is 265383133. The next prime is 265383193. The reversal of 265383145 is 541383562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541383562 = 2 ⋅270691781.

It can be written as a sum of positive squares in 2 ways, for example, as 197880489 + 67502656 = 14067^2 + 8216^2 .

It is a cyclic number.

It is not a de Polignac number, because 265383145 - 2⁵ = 265383113 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26538310 + ... + 26538319.

It is an arithmetic number, because the mean of its divisors is an integer number (79614945).

Almost surely, 2^265383145 is an apocalyptic number.

It is an amenable number.

265383145 is a deficient number, since it is larger than the sum of its proper divisors (53076635).

265383145 is an equidigital number, since it uses as much as digits as its factorization.

265383145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53076634.

The product of its digits is 86400, while the sum is 37.

The square root of 265383145 is about 16290.5845505924. The cubic root of 265383145 is about 642.6252396576.

The spelling of 265383145 in words is "two hundred sixty-five million, three hundred eighty-three thousand, one hundred forty-five".