75009125 has 8 divisors (see below), whose sum is σ = 93611544. Its totient is φ = 60007200.

The previous prime is 75009089. The next prime is 75009127. The reversal of 75009125 is 52190057.

It can be written as a sum of positive squares in 4 ways, for example, as 12013156 + 62995969 = 3466^2 + 7937^2 .

It is not a de Polignac number, because 75009125 - 2¹⁸ = 74746981 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 (75009127) 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, 299912 + ... + 300161.

It is an arithmetic number, because the mean of its divisors is an integer number (11701443).

Almost surely, 2^75009125 is an apocalyptic number.

It is an amenable number.

75009125 is a deficient number, since it is larger than the sum of its proper divisors (18602419).

75009125 is an equidigital number, since it uses as much as digits as its factorization.

75009125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600088 (or 600078 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 75009125 is about 8660.7808539415. The cubic root of 75009125 is about 421.7334348975.

The spelling of 75009125 in words is "seventy-five million, nine thousand, one hundred twenty-five".