425609963520 has 384 divisors, whose sum is σ = 1563170918400. Its totient is φ = 96842612736.

The previous prime is 425609963501. The next prime is 425609963539. The reversal of 425609963520 is 25369906524.

It is an interprime number because it is at equal distance from previous prime (425609963501) and next prime (425609963539).

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×425609963520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48809721 + ... + 48818439.

It is an arithmetic number, because the mean of its divisors is an integer number (4070757600).

Almost surely, 2^425609963520 is an apocalyptic number.

425609963520 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 425609963520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781585459200).

425609963520 is an abundant number, since it is smaller than the sum of its proper divisors (1137560954880).

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

425609963520 is a wasteful number, since it uses less digits than its factorization.

425609963520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8983 (or 8963 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 51.

The spelling of 425609963520 in words is "four hundred twenty-five billion, six hundred nine million, nine hundred sixty-three thousand, five hundred twenty".