425443220 has 24 divisors (see below), whose sum is σ = 893916744. Its totient is φ = 170084736.

The previous prime is 425443211. The next prime is 425443223. The reversal of 425443220 is 22344524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 60403984 + 365039236 = 7772^2 + 19106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 425443220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425443223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41222 + ... + 50498.

It is an arithmetic number, because the mean of its divisors is an integer number (37246531).

Almost surely, 2^425443220 is an apocalyptic number.

It is an amenable number.

425443220 is an abundant number, since it is smaller than the sum of its proper divisors (468473524).

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

425443220 is a wasteful number, since it uses less digits than its factorization.

425443220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579 (or 11577 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 425443220 is about 20626.2749908945. The cubic root of 425443220 is about 752.1085671116.

Adding to 425443220 its reverse (22344524), we get a palindrome (447787744).

It can be divided in two parts, 4254 and 43220, that added together give a palindrome (47474).

The spelling of 425443220 in words is "four hundred twenty-five million, four hundred forty-three thousand, two hundred twenty".