825425 has 12 divisors (see below), whose sum is σ = 1035276. Its totient is φ = 652800.

The previous prime is 825421. The next prime is 825439. The reversal of 825425 is 524528.

It can be written as a sum of positive squares in 6 ways, for example, as 961 + 824464 = 31^2 + 908^2 .

It is not a de Polignac number, because 825425 - 2² = 825421 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 825394 and 825403.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 825425.

It is not an unprimeable number, because it can be changed into a prime (825421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3305 + ... + 3545.

It is an arithmetic number, because the mean of its divisors is an integer number (86273).

2⁸²⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

825425 is a deficient number, since it is larger than the sum of its proper divisors (209851).

825425 is a wasteful number, since it uses less digits than its factorization.

825425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 383 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 825425 is about 908.5290309066. The cubic root of 825425 is about 93.8049751636.

The spelling of 825425 in words is "eight hundred twenty-five thousand, four hundred twenty-five".