425198315520 has 960 divisors, whose sum is σ = 1720992873600. Its totient is φ = 99462021120.

The previous prime is 425198315519. The next prime is 425198315551. The reversal of 425198315520 is 25513891524.

425198315520 is a `hidden beast` number, since 4 + 2 + 5 + 1 + 98 + 3 + 1 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 79 ways as a sum of consecutive naturals, for example, 264590557 + ... + 264592163.

It is an arithmetic number, because the mean of its divisors is an integer number (1792700910).

Almost surely, 2^425198315520 is an apocalyptic number.

425198315520 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 425198315520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860496436800).

425198315520 is an abundant number, since it is smaller than the sum of its proper divisors (1295794558080).

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

425198315520 is a wasteful number, since it uses less digits than its factorization.

425198315520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 425198315520 in words is "four hundred twenty-five billion, one hundred ninety-eight million, three hundred fifteen thousand, five hundred twenty".