131642425 has 6 divisors (see below), whose sum is σ = 163236638. Its totient is φ = 105313920.

The previous prime is 131642419. The next prime is 131642443. The reversal of 131642425 is 524246131.

It can be written as a sum of positive squares in 3 ways, for example, as 2229049 + 129413376 = 1493^2 + 11376^2 .

It is not a de Polignac number, because 131642425 - 2³ = 131642417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131642393 and 131642402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2632824 + ... + 2632873.

Almost surely, 2^131642425 is an apocalyptic number.

It is an amenable number.

131642425 is a deficient number, since it is larger than the sum of its proper divisors (31594213).

131642425 is an equidigital number, since it uses as much as digits as its factorization.

131642425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265707 (or 5265702 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 131642425 is about 11473.5532857088. The cubic root of 131642425 is about 508.7041625118.

Adding to 131642425 its reverse (524246131), we get a palindrome (655888556).

The spelling of 131642425 in words is "one hundred thirty-one million, six hundred forty-two thousand, four hundred twenty-five".