9780125 has 8 divisors (see below), whose sum is σ = 12205752. Its totient is φ = 7824000.

The previous prime is 9780101. The next prime is 9780131. The reversal of 9780125 is 5210879.

It can be written as a sum of positive squares in 4 ways, for example, as 114244 + 9665881 = 338^2 + 3109^2 .

It is not a de Polignac number, because 9780125 - 2¹⁰ = 9779101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9780091 and 9780100.

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, 38996 + ... + 39245.

It is an arithmetic number, because the mean of its divisors is an integer number (1525719).

Almost surely, 2^9780125 is an apocalyptic number.

It is an amenable number.

9780125 is a deficient number, since it is larger than the sum of its proper divisors (2425627).

9780125 is an equidigital number, since it uses as much as digits as its factorization.

9780125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78256 (or 78246 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 9780125 is about 3127.3191394548. The cubic root of 9780125 is about 213.8527315304.

The spelling of 9780125 in words is "nine million, seven hundred eighty thousand, one hundred twenty-five".