425305615488 has 128 divisors (see below), whose sum is σ = 1228666622400. Its totient is φ = 129567436800.

The previous prime is 425305615451. The next prime is 425305615519. The reversal of 425305615488 is 884516503524.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 425305615488.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82423 + ... + 925961.

Almost surely, 2^425305615488 is an apocalyptic number.

425305615488 is a gapful number since it is divisible by the number (48) 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 425305615488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614333311200).

425305615488 is an abundant number, since it is smaller than the sum of its proper divisors (803361006912).

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

425305615488 is a wasteful number, since it uses less digits than its factorization.

425305615488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843670 (or 843658 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 51.

The spelling of 425305615488 in words is "four hundred twenty-five billion, three hundred five million, six hundred fifteen thousand, four hundred eighty-eight".