425500320 has 288 divisors, whose sum is σ = 1585785600. Its totient is φ = 95606784.

The previous prime is 425500319. The next prime is 425500321. The reversal of 425500320 is 23005524.

It is an interprime number because it is at equal distance from previous prime (425500319) and next prime (425500321).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425500321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1857966 + ... + 1858194.

It is an arithmetic number, because the mean of its divisors is an integer number (5506200).

Almost surely, 2^425500320 is an apocalyptic number.

425500320 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 425500320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792892800).

425500320 is an abundant number, since it is smaller than the sum of its proper divisors (1160285280).

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

425500320 is a wasteful number, since it uses less digits than its factorization.

425500320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 425500320 is about 20627.6591013135. The cubic root of 425500320 is about 752.1422131824.

Adding to 425500320 its reverse (23005524), we get a palindrome (448505844).

The spelling of 425500320 in words is "four hundred twenty-five million, five hundred thousand, three hundred twenty".