75015625 has 14 divisors (see below), whose sum is σ = 93787862. Its totient is φ = 60000000.

The previous prime is 75015623. The next prime is 75015683. The reversal of 75015625 is 52651057.

It can be written as a sum of positive squares in 7 ways, for example, as 75012921 + 2704 = 8661^2 + 52^2 .

It is not a de Polignac number, because 75015625 - 2¹ = 75015623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75015623) 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 13 ways as a sum of consecutive naturals, for example, 13225 + ... + 18025.

It is an arithmetic number, because the mean of its divisors is an integer number (6699133).

Almost surely, 2^75015625 is an apocalyptic number.

It is an amenable number.

75015625 is a deficient number, since it is larger than the sum of its proper divisors (18772237).

75015625 is an frugal number, since it uses more digits than its factorization.

75015625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831 (or 4806 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 75015625 is about 8661.1561006600. The cubic root of 75015625 is about 421.7456164738.

The spelling of 75015625 in words is "seventy-five million, fifteen thousand, six hundred twenty-five".