425445 has 16 divisors (see below), whose sum is σ = 689472. Its totient is φ = 224000.

The previous prime is 425443. The next prime is 425471. The reversal of 425445 is 544524.

It is not a de Polignac number, because 425445 - 2¹ = 425443 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425441) 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, 1570 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (43092).

2⁴²⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

425445 is a deficient number, since it is larger than the sum of its proper divisors (264027).

425445 is a wasteful number, since it uses less digits than its factorization.

425445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its digits is 3200, while the sum is 24.

The square root of 425445 is about 652.2614506469. The cubic root of 425445 is about 75.2109616019.

Adding to 425445 its reverse (544524), we get a palindrome (969969).

The spelling of 425445 in words is "four hundred twenty-five thousand, four hundred forty-five".