777125 has 8 divisors (see below), whose sum is σ = 970008. Its totient is φ = 621600.

The previous prime is 777109. The next prime is 777137. The reversal of 777125 is 521777.

It can be written as a sum of positive squares in 4 ways, for example, as 6241 + 770884 = 79^2 + 878^2 .

It is not a de Polignac number, because 777125 - 2⁴ = 777109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2984 + ... + 3233.

It is an arithmetic number, because the mean of its divisors is an integer number (121251).

2⁷⁷⁷¹²⁵ is an apocalyptic number.

It is an amenable number.

777125 is a deficient number, since it is larger than the sum of its proper divisors (192883).

777125 is an equidigital number, since it uses as much as digits as its factorization.

777125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232 (or 6222 counting only the distinct ones).

The product of its digits is 3430, while the sum is 29.

The square root of 777125 is about 881.5469357896. The cubic root of 777125 is about 91.9384039489.

The spelling of 777125 in words is "seven hundred seventy-seven thousand, one hundred twenty-five".