425220 has 48 divisors (see below), whose sum is σ = 1256640. Its totient is φ = 107136.

The previous prime is 425207. The next prime is 425233. The reversal of 425220 is 22524.

It is an interprime number because it is at equal distance from previous prime (425207) and next prime (425233).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 425220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (26180).

2⁴²⁵²²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628320).

425220 is an abundant number, since it is smaller than the sum of its proper divisors (831420).

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

425220 is a wasteful number, since it uses less digits than its factorization.

425220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 425220 is about 652.0889509875. The cubic root of 425220 is about 75.1977006238.

Adding to 425220 its reverse (22524), we get a palindrome (447744).

The spelling of 425220 in words is "four hundred twenty-five thousand, two hundred twenty".