845425 has 12 divisors (see below), whose sum is σ = 1198336. Its totient is φ = 579600.

The previous prime is 845387. The next prime is 845431. The reversal of 845425 is 524548.

It is not a de Polignac number, because 845425 - 2⁹ = 844913 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 845393 and 845402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2241 + ... + 2590.

2⁸⁴⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

845425 is a deficient number, since it is larger than the sum of its proper divisors (352911).

845425 is a wasteful number, since it uses less digits than its factorization.

845425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848 (or 4843 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 845425 is about 919.4699560073. The cubic root of 845425 is about 94.5565668253.

The spelling of 845425 in words is "eight hundred forty-five thousand, four hundred twenty-five".