131525437 has 2 divisors, whose sum is σ = 131525438. Its totient is φ = 131525436.

The previous prime is 131525423. The next prime is 131525453. The reversal of 131525437 is 734525131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77193796 + 54331641 = 8786^2 + 7371^2 .

It is an emirp because it is prime and its reverse (734525131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131525437 - 2⁷ = 131525309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131525399 and 131525408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131525497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65762718 + 65762719.

It is an arithmetic number, because the mean of its divisors is an integer number (65762719).

Almost surely, 2^131525437 is an apocalyptic number.

It is an amenable number.

131525437 is a deficient number, since it is larger than the sum of its proper divisors (1).

131525437 is an equidigital number, since it uses as much as digits as its factorization.

131525437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 131525437 is about 11468.4539934553. The cubic root of 131525437 is about 508.5534260998.

The spelling of 131525437 in words is "one hundred thirty-one million, five hundred twenty-five thousand, four hundred thirty-seven".