425210420 has 12 divisors (see below), whose sum is σ = 892941924. Its totient is φ = 170084160.

The previous prime is 425210399. The next prime is 425210431. The reversal of 425210420 is 24012524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202663696 + 222546724 = 14236^2 + 14918^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21260521 = 425210420 / (4 + 2 + 5 + 2 + 1 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 425210392 and 425210401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10630241 + ... + 10630280.

It is an arithmetic number, because the mean of its divisors is an integer number (74411827).

Almost surely, 2^425210420 is an apocalyptic number.

It is an amenable number.

425210420 is an abundant number, since it is smaller than the sum of its proper divisors (467731504).

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

425210420 is a wasteful number, since it uses less digits than its factorization.

425210420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21260530 (or 21260528 counting only the distinct ones).

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

The square root of 425210420 is about 20620.6309311815. The cubic root of 425210420 is about 751.9713589703.

Adding to 425210420 its reverse (24012524), we get a palindrome (449222944).

The spelling of 425210420 in words is "four hundred twenty-five million, two hundred ten thousand, four hundred twenty".