9819125 has 8 divisors (see below), whose sum is σ = 12254424. Its totient is φ = 7855200.

The previous prime is 9819101. The next prime is 9819127. The reversal of 9819125 is 5219189.

It can be written as a sum of positive squares in 4 ways, for example, as 1787569 + 8031556 = 1337^2 + 2834^2 .

It is not a de Polignac number, because 9819125 - 2¹⁶ = 9753589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9819127) 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, 39152 + ... + 39401.

It is an arithmetic number, because the mean of its divisors is an integer number (1531803).

Almost surely, 2^9819125 is an apocalyptic number.

It is an amenable number.

9819125 is a deficient number, since it is larger than the sum of its proper divisors (2435299).

9819125 is an equidigital number, since it uses as much as digits as its factorization.

9819125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78568 (or 78558 counting only the distinct ones).

The product of its digits is 6480, while the sum is 35.

The square root of 9819125 is about 3133.5483082282. The cubic root of 9819125 is about 214.1366132100.

The spelling of 9819125 in words is "nine million, eight hundred nineteen thousand, one hundred twenty-five".