775125 has 48 divisors (see below), whose sum is σ = 1533168. Its totient is φ = 374400.

The previous prime is 775121. The next prime is 775147. The reversal of 775125 is 521577.

775125 = T₆₄ + T₆₅ + ... + T₁₆₉.

775125 = 160² + 161² + ... + 185².

It can be written as a sum of positive squares in 8 ways, for example, as 311364 + 463761 = 558^2 + 681^2 .

It is not a de Polignac number, because 775125 - 2² = 775121 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 775125.

It is not an unprimeable number, because it can be changed into a prime (775121) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 14599 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (31941).

2⁷⁷⁵¹²⁵ is an apocalyptic number.

775125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

775125 is a deficient number, since it is larger than the sum of its proper divisors (758043).

775125 is a wasteful number, since it uses less digits than its factorization.

775125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 74 counting only the distinct ones).

The product of its digits is 2450, while the sum is 27.

The square root of 775125 is about 880.4118354498. The cubic root of 775125 is about 91.8594656507.

It can be divided in two parts, 7751 and 25, that added together give a 5-th power (7776 = 6⁵).

The spelling of 775125 in words is "seven hundred seventy-five thousand, one hundred twenty-five".