425556 has 18 divisors (see below), whose sum is σ = 1075802. Its totient is φ = 141840.

The previous prime is 425549. The next prime is 425563. The reversal of 425556 is 655524.

425556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (425549) and next prime (425563).

It can be written as a sum of positive squares in only one way, i.e., 291600 + 133956 = 540^2 + 366^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425556.

It is an unprimeable number.

425556 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 5 ways as a sum of consecutive naturals, for example, 5875 + ... + 5946.

2⁴²⁵⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

425556 is an abundant number, since it is smaller than the sum of its proper divisors (650246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425556 is a wasteful number, since it uses less digits than its factorization.

425556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831 (or 11826 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 425556 is about 652.3465336767. The cubic root of 425556 is about 75.2175019622.

The spelling of 425556 in words is "four hundred twenty-five thousand, five hundred fifty-six".