819125 has 8 divisors (see below), whose sum is σ = 1022424. Its totient is φ = 655200.

The previous prime is 819101. The next prime is 819131. The reversal of 819125 is 521918.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69169 + 749956 = 263^2 + 866^2 .

It is not a de Polignac number, because 819125 - 2⁶ = 819061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 819094 and 819103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3152 + ... + 3401.

It is an arithmetic number, because the mean of its divisors is an integer number (127803).

2⁸¹⁹¹²⁵ is an apocalyptic number.

It is an amenable number.

819125 is a deficient number, since it is larger than the sum of its proper divisors (203299).

819125 is an equidigital number, since it uses as much as digits as its factorization.

819125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568 (or 6558 counting only the distinct ones).

The product of its digits is 720, while the sum is 26.

The square root of 819125 is about 905.0552469325. The cubic root of 819125 is about 93.5657120496.

The spelling of 819125 in words is "eight hundred nineteen thousand, one hundred twenty-five".