775825 has 6 divisors (see below), whose sum is σ = 962054. Its totient is φ = 620640.

The previous prime is 775823. The next prime is 775861. The reversal of 775825 is 528577.

It can be written as a sum of positive squares in 3 ways, for example, as 85264 + 690561 = 292^2 + 831^2 .

It is not a de Polignac number, because 775825 - 2¹ = 775823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (775823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15492 + ... + 15541.

2⁷⁷⁵⁸²⁵ is an apocalyptic number.

It is an amenable number.

775825 is a deficient number, since it is larger than the sum of its proper divisors (186229).

775825 is a wasteful number, since it uses less digits than its factorization.

775825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31043 (or 31038 counting only the distinct ones).

The product of its digits is 19600, while the sum is 34.

The square root of 775825 is about 880.8092869628. The cubic root of 775825 is about 91.8871094841.

It can be divided in two parts, 775 and 825, that added together give a square (1600 = 40²).

The spelling of 775825 in words is "seven hundred seventy-five thousand, eight hundred twenty-five".