425644 has 6 divisors (see below), whose sum is σ = 744884. Its totient is φ = 212820.

The previous prime is 425641. The next prime is 425653. The reversal of 425644 is 446524.

425644 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53202 + ... + 53209.

2⁴²⁵⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

425644 is a deficient number, since it is larger than the sum of its proper divisors (319240).

425644 is a wasteful number, since it uses less digits than its factorization.

425644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106415 (or 106413 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 425644 is about 652.4139790041. The cubic root of 425644 is about 75.2226863046. Note that the first 3 decimals are identical.

The spelling of 425644 in words is "four hundred twenty-five thousand, six hundred forty-four".