75521125 has 16 divisors (see below), whose sum is σ = 94691376. Its totient is φ = 60134400.

The previous prime is 75521099. The next prime is 75521141. The reversal of 75521125 is 52112557.

It can be written as a sum of positive squares in 8 ways, for example, as 32251041 + 43270084 = 5679^2 + 6578^2 .

It is not a de Polignac number, because 75521125 - 2¹⁹ = 74996837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75521093 and 75521102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27829 + ... + 30421.

It is an arithmetic number, because the mean of its divisors is an integer number (5918211).

Almost surely, 2^75521125 is an apocalyptic number.

It is an amenable number.

75521125 is a deficient number, since it is larger than the sum of its proper divisors (19170251).

75521125 is a wasteful number, since it uses less digits than its factorization.

75521125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841 (or 2831 counting only the distinct ones).

The product of its digits is 3500, while the sum is 28.

The square root of 75521125 is about 8690.2891206219. The cubic root of 75521125 is about 422.6908209844.

The spelling of 75521125 in words is "seventy-five million, five hundred twenty-one thousand, one hundred twenty-five".