75552139525 has 24 divisors (see below), whose sum is σ = 94262393160. Its totient is φ = 60070133760.

The previous prime is 75552139477. The next prime is 75552139547. The reversal of 75552139525 is 52593125557.

It can be written as a sum of positive squares in 12 ways, for example, as 27966207361 + 47585932164 = 167231^2 + 218142^2 .

It is not a de Polignac number, because 75552139525 - 2²⁹ = 75015268613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2656581 + ... + 2684869.

It is an arithmetic number, because the mean of its divisors is an integer number (3927599715).

Almost surely, 2^75552139525 is an apocalyptic number.

It is an amenable number.

75552139525 is a deficient number, since it is larger than the sum of its proper divisors (18710253635).

75552139525 is a wasteful number, since it uses less digits than its factorization.

75552139525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28953 (or 28948 counting only the distinct ones).

The product of its digits is 2362500, while the sum is 49.

The spelling of 75552139525 in words is "seventy-five billion, five hundred fifty-two million, one hundred thirty-nine thousand, five hundred twenty-five".