75145525 has 96 divisors (see below), whose sum is σ = 127491840. Its totient is φ = 42577920.

The previous prime is 75145501. The next prime is 75145537. The reversal of 75145525 is 52554157.

It is not a de Polignac number, because 75145525 - 2⁵ = 75145493 is a prime.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1121542 + ... + 1121608.

It is an arithmetic number, because the mean of its divisors is an integer number (1328040).

Almost surely, 2^75145525 is an apocalyptic number.

It is an amenable number.

75145525 is a deficient number, since it is larger than the sum of its proper divisors (52346315).

75145525 is a wasteful number, since it uses less digits than its factorization.

75145525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 138 counting only the distinct ones).

The product of its digits is 35000, while the sum is 34.

The square root of 75145525 is about 8668.6518559693. The cubic root of 75145525 is about 421.9889131803.

The spelling of 75145525 in words is "seventy-five million, one hundred forty-five thousand, five hundred twenty-five".