131290925 has 12 divisors (see below), whose sum is σ = 163004820. Its totient is φ = 104901120.

The previous prime is 131290919. The next prime is 131290927. The reversal of 131290925 is 529092131.

It can be written as a sum of positive squares in 6 ways, for example, as 12524521 + 118766404 = 3539^2 + 10898^2 .

It is not a de Polignac number, because 131290925 - 2⁴ = 131290909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131290891 and 131290900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131290927) 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 11 ways as a sum of consecutive naturals, for example, 20399 + ... + 26051.

It is an arithmetic number, because the mean of its divisors is an integer number (13583735).

Almost surely, 2^131290925 is an apocalyptic number.

It is an amenable number.

131290925 is a deficient number, since it is larger than the sum of its proper divisors (31713895).

131290925 is an equidigital number, since it uses as much as digits as its factorization.

131290925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6592 (or 6587 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 131290925 is about 11458.2252116111. The cubic root of 131290925 is about 508.2509932624.

The spelling of 131290925 in words is "one hundred thirty-one million, two hundred ninety thousand, nine hundred twenty-five".