265268612405 has 8 divisors (see below), whose sum is σ = 321474041784. Its totient is φ = 210113752000.

The previous prime is 265268612393. The next prime is 265268612419. The reversal of 265268612405 is 504216862562.

It can be written as a sum of positive squares in 4 ways, for example, as 110122431409 + 155146180996 = 331847^2 + 393886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 265268612405 - 2²⁸ = 265000176949 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 265268612405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262641686 + ... + 262642695.

It is an arithmetic number, because the mean of its divisors is an integer number (40184255223).

Almost surely, 2^265268612405 is an apocalyptic number.

It is an amenable number.

265268612405 is a deficient number, since it is larger than the sum of its proper divisors (56205429379).

265268612405 is a wasteful number, since it uses less digits than its factorization.

265268612405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525284487.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 265268612405 in words is "two hundred sixty-five billion, two hundred sixty-eight million, six hundred twelve thousand, four hundred five".