775344025 has 9 divisors (see below), whose sum is σ = 961599261. Its totient is φ = 620163840.

The previous prime is 775344019. The next prime is 775344043. The reversal of 775344025 is 520443577.

It is a happy number.

The square root of 775344025 is 27845.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 170380809 + 604963216 = 13053^2 + 24596^2 .

It is not a de Polignac number, because 775344025 - 2⁷ = 775343897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 136441 + ... + 142009.

Almost surely, 2^775344025 is an apocalyptic number.

775344025 is the 27845-th square number.

775344025 is the 13923-rd centered octagonal number.

It is an amenable number.

775344025 is a deficient number, since it is larger than the sum of its proper divisors (186255236).

775344025 is an frugal number, since it uses more digits than its factorization.

775344025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148 (or 5574 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 37.

The cubic root of 775344025 is about 918.6811699712.

The spelling of 775344025 in words is "seven hundred seventy-five million, three hundred forty-four thousand, twenty-five".