425185 has 4 divisors (see below), whose sum is σ = 510228. Its totient is φ = 340144.

The previous prime is 425149. The next prime is 425189. The reversal of 425185 is 581524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147456 + 277729 = 384^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 425185 - 2⁷ = 425057 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425189) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 42514 + ... + 42523.

It is an arithmetic number, because the mean of its divisors is an integer number (127557).

2⁴²⁵¹⁸⁵ is an apocalyptic number.

It is an amenable number.

425185 is a deficient number, since it is larger than the sum of its proper divisors (85043).

425185 is an equidigital number, since it uses as much as digits as its factorization.

425185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85042.

The product of its digits is 1600, while the sum is 25.

The square root of 425185 is about 652.0621136058. The cubic root of 425185 is about 75.1956373846.

The spelling of 425185 in words is "four hundred twenty-five thousand, one hundred eighty-five".