9810125020 has 24 divisors (see below), whose sum is σ = 20610190944. Its totient is φ = 3922349376.

The previous prime is 9810124997. The next prime is 9810125093. The reversal of 9810125020 is 205210189.

It is a self number, because there is not a number n which added to its sum of digits gives 9810125020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58464 + ... + 151783.

It is an arithmetic number, because the mean of its divisors is an integer number (858757956).

Almost surely, 2^9810125020 is an apocalyptic number.

It is an amenable number.

9810125020 is an abundant number, since it is smaller than the sum of its proper divisors (10800065924).

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

9810125020 is a wasteful number, since it uses less digits than its factorization.

9810125020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212589 (or 212587 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 9810125020 is about 99046.0752377397. The cubic root of 9810125020 is about 2140.7116900960.

The spelling of 9810125020 in words is "nine billion, eight hundred ten million, one hundred twenty-five thousand, twenty".