42521625520 has 40 divisors (see below), whose sum is σ = 107850306960. Its totient is φ = 15462408960.

The previous prime is 42521625511. The next prime is 42521625527. The reversal of 42521625520 is 2552612524.

42521625520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (42521625527) 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, 24159135 + ... + 24160894.

It is an arithmetic number, because the mean of its divisors is an integer number (2696257674).

Almost surely, 2^42521625520 is an apocalyptic number.

42521625520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42521625520 is an abundant number, since it is smaller than the sum of its proper divisors (65328681440).

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

42521625520 is a wasteful number, since it uses less digits than its factorization.

42521625520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48320053 (or 48320047 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 42521625520 in words is "forty-two billion, five hundred twenty-one million, six hundred twenty-five thousand, five hundred twenty".