76578125 has 42 divisors (see below), whose sum is σ = 107225190. Its totient is φ = 54600000.

The previous prime is 76578121. The next prime is 76578127. The reversal of 76578125 is 52187567.

It can be written as a sum of positive squares in 21 ways, for example, as 10220809 + 66357316 = 3197^2 + 8146^2 .

It is not a de Polignac number, because 76578125 - 2² = 76578121 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76578121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 2640611 + ... + 2640639.

Almost surely, 2^76578125 is an apocalyptic number.

It is an amenable number.

76578125 is a deficient number, since it is larger than the sum of its proper divisors (30647065).

76578125 is an frugal number, since it uses more digits than its factorization.

76578125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 47 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 76578125 is about 8750.8928115936. The cubic root of 76578125 is about 424.6536971373.

The spelling of 76578125 in words is "seventy-six million, five hundred seventy-eight thousand, one hundred twenty-five".