978173125 has 20 divisors (see below), whose sum is σ = 1242411676. Its totient is φ = 769680000.

The previous prime is 978173117. The next prime is 978173129. The reversal of 978173125 is 521371879.

It can be written as a sum of positive squares in 10 ways, for example, as 968827876 + 9345249 = 31126^2 + 3057^2 .

It is not a de Polignac number, because 978173125 - 2³ = 978173117 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 (978173129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25297 + ... + 50953.

Almost surely, 2^978173125 is an apocalyptic number.

It is an amenable number.

978173125 is a deficient number, since it is larger than the sum of its proper divisors (264238551).

978173125 is an equidigital number, since it uses as much as digits as its factorization.

978173125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25738 (or 25723 counting only the distinct ones).

The product of its digits is 105840, while the sum is 43.

The square root of 978173125 is about 31275.7593832668. The cubic root of 978173125 is about 992.6707888999.

The spelling of 978173125 in words is "nine hundred seventy-eight million, one hundred seventy-three thousand, one hundred twenty-five".