775605265 has 4 divisors (see below), whose sum is σ = 930726324. Its totient is φ = 620484208.

The previous prime is 775605227. The next prime is 775605283. The reversal of 775605265 is 562506577.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562506577 = 613 ⋅917629.

It can be written as a sum of positive squares in 2 ways, for example, as 422014849 + 353590416 = 20543^2 + 18804^2 .

It is a cyclic number.

It is not a de Polignac number, because 775605265 - 2²³ = 767216657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77560522 + ... + 77560531.

It is an arithmetic number, because the mean of its divisors is an integer number (232681581).

Almost surely, 2^775605265 is an apocalyptic number.

It is an amenable number.

775605265 is a deficient number, since it is larger than the sum of its proper divisors (155121059).

775605265 is a wasteful number, since it uses less digits than its factorization.

775605265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155121058.

The product of its (nonzero) digits is 441000, while the sum is 43.

The square root of 775605265 is about 27849.6905727873. The cubic root of 775605265 is about 918.7843367857.

The spelling of 775605265 in words is "seven hundred seventy-five million, six hundred five thousand, two hundred sixty-five".