425545 has 4 divisors (see below), whose sum is σ = 510660. Its totient is φ = 340432.

The previous prime is 425533. The next prime is 425549. The reversal of 425545 is 545524.

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 166464 + 259081 = 408^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 425545 - 2⁷ = 425417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425549) 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, 42550 + ... + 42559.

It is an arithmetic number, because the mean of its divisors is an integer number (127665).

2⁴²⁵⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

425545 is a deficient number, since it is larger than the sum of its proper divisors (85115).

425545 is an equidigital number, since it uses as much as digits as its factorization.

425545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85114.

The product of its digits is 4000, while the sum is 25.

The square root of 425545 is about 652.3381025205. The cubic root of 425545 is about 75.2168538692.

The spelling of 425545 in words is "four hundred twenty-five thousand, five hundred forty-five".