812125 has 16 divisors (see below), whose sum is σ = 1038960. Its totient is φ = 633600.

The previous prime is 812101. The next prime is 812129. The reversal of 812125 is 521218.

812125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 367236 + 444889 = 606^2 + 667^2 .

It is not a de Polignac number, because 812125 - 2⁷ = 811997 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9081 + ... + 9169.

It is an arithmetic number, because the mean of its divisors is an integer number (64935).

2⁸¹²¹²⁵ is an apocalyptic number.

It is an amenable number.

812125 is a deficient number, since it is larger than the sum of its proper divisors (226835).

812125 is an equidigital number, since it uses as much as digits as its factorization.

812125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 167 counting only the distinct ones).

The product of its digits is 160, while the sum is 19.

The square root of 812125 is about 901.1797822854. The cubic root of 812125 is about 93.2984208991.

The spelling of 812125 in words is "eight hundred twelve thousand, one hundred twenty-five".