425122220 has 48 divisors (see below), whose sum is σ = 925344000. Its totient is φ = 163887360.

The previous prime is 425122211. The next prime is 425122253. The reversal of 425122220 is 22221524.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 425122192 and 425122201.

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, 165506 + ... + 168054.

It is an arithmetic number, because the mean of its divisors is an integer number (19278000).

Almost surely, 2^425122220 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 425122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462672000).

425122220 is an abundant number, since it is smaller than the sum of its proper divisors (500221780).

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

425122220 is a wasteful number, since it uses less digits than its factorization.

425122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 425122220 is about 20618.4921854145. The cubic root of 425122220 is about 751.9193623924.

Adding to 425122220 its reverse (22221524), we get a palindrome (447343744).

The spelling of 425122220 in words is "four hundred twenty-five million, one hundred twenty-two thousand, two hundred twenty".