265442513 has 4 divisors (see below), whose sum is σ = 303362880. Its totient is φ = 227522148.

The previous prime is 265442479. The next prime is 265442519. The reversal of 265442513 is 315244562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 265442513 - 2¹⁶ = 265376977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265442513.

It is not an unprimeable number, because it can be changed into a prime (265442519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18960173 + ... + 18960186.

It is an arithmetic number, because the mean of its divisors is an integer number (75840720).

Almost surely, 2^265442513 is an apocalyptic number.

It is an amenable number.

265442513 is a deficient number, since it is larger than the sum of its proper divisors (37920367).

265442513 is an equidigital number, since it uses as much as digits as its factorization.

265442513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37920366.

The product of its digits is 28800, while the sum is 32.

The square root of 265442513 is about 16292.4066055325. The cubic root of 265442513 is about 642.6731559520.

The spelling of 265442513 in words is "two hundred sixty-five million, four hundred forty-two thousand, five hundred thirteen".