823425 has 12 divisors (see below), whose sum is σ = 1361520. Its totient is φ = 439120.

The previous prime is 823421. The next prime is 823447. The reversal of 823425 is 524328.

It is not a de Polignac number, because 823425 - 2² = 823421 is a prime.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 823395 and 823404.

It is not an unprimeable number, because it can be changed into a prime (823421) 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, 5415 + ... + 5564.

It is an arithmetic number, because the mean of its divisors is an integer number (113460).

2⁸²³⁴²⁵ is an apocalyptic number.

It is an amenable number.

823425 is a deficient number, since it is larger than the sum of its proper divisors (538095).

823425 is a wasteful number, since it uses less digits than its factorization.

823425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10992 (or 10987 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 823425 is about 907.4276830690. The cubic root of 823425 is about 93.7291509193.

The spelling of 823425 in words is "eight hundred twenty-three thousand, four hundred twenty-five".