425478 has 8 divisors (see below), whose sum is σ = 850968. Its totient is φ = 141824.

The previous prime is 425473. The next prime is 425489. The reversal of 425478 is 874524.

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

425478 is an admirable number.

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 425478.

It is not an unprimeable number, because it can be changed into a prime (425471) by changing a digit.

425478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35451 + ... + 35462.

It is an arithmetic number, because the mean of its divisors is an integer number (106371).

2⁴²⁵⁴⁷⁸ is an apocalyptic number.

425478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

425478 is a wasteful number, since it uses less digits than its factorization.

425478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70918.

The product of its digits is 8960, while the sum is 30.

The square root of 425478 is about 652.2867467610. The cubic root of 425478 is about 75.2129061521.

It can be divided in two parts, 425 and 478, that added together give a triangular number (903 = T₄₂).

The spelling of 425478 in words is "four hundred twenty-five thousand, four hundred seventy-eight".