425566 has 8 divisors (see below), whose sum is σ = 641160. Its totient is φ = 211848.

The previous prime is 425563. The next prime is 425591. The reversal of 425566 is 665524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×425566² = 362212840712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425563) 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 3 ways as a sum of consecutive naturals, for example, 505 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (80145).

2⁴²⁵⁵⁶⁶ is an apocalyptic number.

425566 is a deficient number, since it is larger than the sum of its proper divisors (215594).

425566 is a wasteful number, since it uses less digits than its factorization.

425566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its digits is 7200, while the sum is 28.

The square root of 425566 is about 652.3541982696. The cubic root of 425566 is about 75.2180911280.

The spelling of 425566 in words is "four hundred twenty-five thousand, five hundred sixty-six".