775112005 has 4 divisors (see below), whose sum is σ = 930134412. Its totient is φ = 620089600.

The previous prime is 775111999. The next prime is 775112021. The reversal of 775112005 is 500211577.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500211577 = 157 ⋅3186061.

It can be written as a sum of positive squares in 2 ways, for example, as 231709284 + 543402721 = 15222^2 + 23311^2 .

It is not a de Polignac number, because 775112005 - 2⁷ = 775111877 is a prime.

It is a Duffinian number.

It is a congruent 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, 77511196 + ... + 77511205.

It is an arithmetic number, because the mean of its divisors is an integer number (232533603).

Almost surely, 2^775112005 is an apocalyptic number.

It is an amenable number.

775112005 is a deficient number, since it is larger than the sum of its proper divisors (155022407).

775112005 is a wasteful number, since it uses less digits than its factorization.

775112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155022406.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 775112005 is about 27840.8334106578. The cubic root of 775112005 is about 918.5895230534.

The spelling of 775112005 in words is "seven hundred seventy-five million, one hundred twelve thousand, five".