425537515728 has 480 divisors, whose sum is σ = 1351978467840. Its totient is φ = 124087541760.

The previous prime is 425537515721. The next prime is 425537515787. The reversal of 425537515728 is 827515735524.

425537515728 is a `hidden beast` number, since 4 + 2 + 5 + 53 + 7 + 515 + 72 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425537515721) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 387909676 + ... + 387910772.

It is an arithmetic number, because the mean of its divisors is an integer number (2816621808).

Almost surely, 2^425537515728 is an apocalyptic number.

425537515728 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 425537515728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675989233920).

425537515728 is an abundant number, since it is smaller than the sum of its proper divisors (926440952112).

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

425537515728 is a wasteful number, since it uses less digits than its factorization.

425537515728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1298 counting only the distinct ones).

The product of its digits is 11760000, while the sum is 54.

The spelling of 425537515728 in words is "four hundred twenty-five billion, five hundred thirty-seven million, five hundred fifteen thousand, seven hundred twenty-eight".