131440025 has 12 divisors (see below), whose sum is σ = 163156224. Its totient is φ = 105042000.

The previous prime is 131440019. The next prime is 131440033. The reversal of 131440025 is 520044131.

It is not a de Polignac number, because 131440025 - 2⁶ = 131439961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131439979 and 131440006.

It is an unprimeable number.

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, 28640 + ... + 32910.

It is an arithmetic number, because the mean of its divisors is an integer number (13596352).

Almost surely, 2^131440025 is an apocalyptic number.

It is an amenable number.

131440025 is a deficient number, since it is larger than the sum of its proper divisors (31716199).

131440025 is a wasteful number, since it uses less digits than its factorization.

131440025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512 (or 5507 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 131440025 is about 11464.7296086737. The cubic root of 131440025 is about 508.4433181944.

Adding to 131440025 its reverse (520044131), we get a palindrome (651484156).

The spelling of 131440025 in words is "one hundred thirty-one million, four hundred forty thousand, twenty-five".