9831772125 has 96 divisors (see below), whose sum is σ = 20954269440. Its totient is φ = 4339440000.

The previous prime is 9831772121. The next prime is 9831772193. The reversal of 9831772125 is 5212771389.

It is not a de Polignac number, because 9831772125 - 2² = 9831772121 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9831772121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 206850 + ... + 249900.

It is an arithmetic number, because the mean of its divisors is an integer number (218273640).

Almost surely, 2^9831772125 is an apocalyptic number.

It is an amenable number.

9831772125 is an abundant number, since it is smaller than the sum of its proper divisors (11122497315).

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

9831772125 is a wasteful number, since it uses less digits than its factorization.

9831772125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43108 (or 43095 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 9831772125 is about 99155.2929752114. The cubic root of 9831772125 is about 2142.2851042119.

The spelling of 9831772125 in words is "nine billion, eight hundred thirty-one million, seven hundred seventy-two thousand, one hundred twenty-five".