425616321000 has 512 divisors, whose sum is σ = 1509402585600. Its totient is φ = 98985369600.

The previous prime is 425616320989. The next prime is 425616321029. The reversal of 425616321000 is 123616524.

It is a super-2 number, since 2×425616321000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 454232532 + ... + 454233468.

It is an arithmetic number, because the mean of its divisors is an integer number (2948051925).

Almost surely, 2^425616321000 is an apocalyptic number.

425616321000 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 425616321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754701292800).

425616321000 is an abundant number, since it is smaller than the sum of its proper divisors (1083786264600).

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

425616321000 is a wasteful number, since it uses less digits than its factorization.

425616321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1592 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 425616321000 its reverse (123616524), we get a palindrome (425739937524).

The spelling of 425616321000 in words is "four hundred twenty-five billion, six hundred sixteen million, three hundred twenty-one thousand".