425645 has 16 divisors (see below), whose sum is σ = 570240. Its totient is φ = 302400.

The previous prime is 425641. The next prime is 425653. The reversal of 425645 is 546524.

It is not a de Polignac number, because 425645 - 2² = 425641 is a prime.

It is a super-3 number, since 3×425645³ = 231346995225633375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3851 + ... + 3959.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2⁴²⁵⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

425645 is a deficient number, since it is larger than the sum of its proper divisors (144595).

425645 is a wasteful number, since it uses less digits than its factorization.

425645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196.

The product of its digits is 4800, while the sum is 26.

The square root of 425645 is about 652.4147453882. The cubic root of 425645 is about 75.2227452134. Note that the first 3 decimals are identical.

The spelling of 425645 in words is "four hundred twenty-five thousand, six hundred forty-five".