131252235433525 has 12 divisors (see below), whose sum is σ = 165045064502304. Its totient is φ = 103522889918000.

The previous prime is 131252235433507. The next prime is 131252235433567. The reversal of 131252235433525 is 525334532252131.

It is a de Polignac number, because none of the positive numbers 2^k-131252235433525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36972458911 + ... + 36972462460.

It is an arithmetic number, because the mean of its divisors is an integer number (13753755375192).

Almost surely, 2^{131252235433525} is an apocalyptic number.

It is an amenable number.

131252235433525 is a deficient number, since it is larger than the sum of its proper divisors (33792829068779).

131252235433525 is an equidigital number, since it uses as much as digits as its factorization.

131252235433525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73944921452 (or 73944921447 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 46.

Adding to 131252235433525 its reverse (525334532252131), we get a palindrome (656586767685656).

The spelling of 131252235433525 in words is "one hundred thirty-one trillion, two hundred fifty-two billion, two hundred thirty-five million, four hundred thirty-three thousand, five hundred twenty-five".