75247525 has 24 divisors (see below), whose sum is σ = 99830664. Its totient is φ = 56064000.

The previous prime is 75247519. The next prime is 75247573. The reversal of 75247525 is 52574257.

It can be written as a sum of positive squares in 12 ways, for example, as 11519236 + 63728289 = 3394^2 + 7983^2 .

It is not a de Polignac number, because 75247525 - 2⁵ = 75247493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a Kaprekar number, because its square (5662190018625625) can be partitioned into two parts whose sum is 75247525.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42049 + ... + 43801.

It is an arithmetic number, because the mean of its divisors is an integer number (4159611).

Almost surely, 2^75247525 is an apocalyptic number.

It is an amenable number.

75247525 is a deficient number, since it is larger than the sum of its proper divisors (24583139).

75247525 is a wasteful number, since it uses less digits than its factorization.

75247525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1876 counting only the distinct ones).

The product of its digits is 98000, while the sum is 37.

The square root of 75247525 is about 8674.5331286473. The cubic root of 75247525 is about 422.1797580280.

The spelling of 75247525 in words is "seventy-five million, two hundred forty-seven thousand, five hundred twenty-five".