425668 has 6 divisors (see below), whose sum is σ = 744926. Its totient is φ = 212832.

The previous prime is 425653. The next prime is 425681. The reversal of 425668 is 866524.

It can be written as a sum of positive squares in only one way, i.e., 399424 + 26244 = 632^2 + 162^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 53205 + ... + 53212.

2⁴²⁵⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

425668 is a deficient number, since it is larger than the sum of its proper divisors (319258).

425668 is a wasteful number, since it uses less digits than its factorization.

425668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106421 (or 106419 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 425668 is about 652.4323719743. The cubic root of 425668 is about 75.2241000921.

The spelling of 425668 in words is "four hundred twenty-five thousand, six hundred sixty-eight".