425504424520 has 32 divisors (see below), whose sum is σ = 1094154235200. Its totient is φ = 145887231168.

The previous prime is 425504424491. The next prime is 425504424523. The reversal of 425504424520 is 25424405524.

It is a self number, because there is not a number n which added to its sum of digits gives 425504424520.

It is not an unprimeable number, because it can be changed into a prime (425504424523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759829050 + ... + 759829609.

It is an arithmetic number, because the mean of its divisors is an integer number (34192319850).

Almost surely, 2^425504424520 is an apocalyptic number.

425504424520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425504424520 is an abundant number, since it is smaller than the sum of its proper divisors (668649810680).

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

425504424520 is a wasteful number, since it uses less digits than its factorization.

425504424520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519658677 (or 1519658673 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

The spelling of 425504424520 in words is "four hundred twenty-five billion, five hundred four million, four hundred twenty-four thousand, five hundred twenty".