131404515525 has 18 divisors (see below), whose sum is σ = 235360088210. Its totient is φ = 70082408160.

The previous prime is 131404515523. The next prime is 131404515551. The reversal of 131404515525 is 525515404131.

131404515525 is a `hidden beast` number, since 13 + 1 + 40 + 4 + 51 + 552 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2223216801 + 129181298724 = 47151^2 + 359418^2 .

It is not a de Polignac number, because 131404515525 - 2¹ = 131404515523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131404515525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131404515523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 292009810 + ... + 292010259.

Almost surely, 2^131404515525 is an apocalyptic number.

131404515525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131404515525 is a deficient number, since it is larger than the sum of its proper divisors (103955572685).

131404515525 is a wasteful number, since it uses less digits than its factorization.

131404515525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584020085 (or 584020077 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 131404515525 its reverse (525515404131), we get a palindrome (656919919656).

The spelling of 131404515525 in words is "one hundred thirty-one billion, four hundred four million, five hundred fifteen thousand, five hundred twenty-five".