425144320 has 52 divisors (see below), whose sum is σ = 1020270960. Its totient is φ = 170049536.

The previous prime is 425144303. The next prime is 425144339. The reversal of 425144320 is 23441524.

It is a happy 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, 10101 + ... + 30859.

Almost surely, 2^425144320 is an apocalyptic number.

425144320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425144320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510135480).

425144320 is an abundant number, since it is smaller than the sum of its proper divisors (595126640).

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

425144320 is an equidigital number, since it uses as much as digits as its factorization.

425144320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20788 (or 20766 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 425144320 is about 20619.0281051266. The cubic root of 425144320 is about 751.9323916886.

Adding to 425144320 its reverse (23441524), we get a palindrome (448585844).

The spelling of 425144320 in words is "four hundred twenty-five million, one hundred forty-four thousand, three hundred twenty".