425205420 has 48 divisors (see below), whose sum is σ = 1194455808. Its totient is φ = 113018560.

The previous prime is 425205401. The next prime is 425205449. The reversal of 425205420 is 24502524.

It is a happy number.

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, 7267 + ... + 30053.

It is an arithmetic number, because the mean of its divisors is an integer number (24884496).

Almost surely, 2^425205420 is an apocalyptic number.

It is an amenable number.

425205420 is an abundant number, since it is smaller than the sum of its proper divisors (769250388).

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

425205420 is a wasteful number, since it uses less digits than its factorization.

425205420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23110 (or 23108 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 425205420 is about 20620.5096930217. The cubic root of 425205420 is about 751.9684115107.

Adding to 425205420 its reverse (24502524), we get a palindrome (449707944).

The spelling of 425205420 in words is "four hundred twenty-five million, two hundred five thousand, four hundred twenty".