131207425 has 6 divisors (see below), whose sum is σ = 162697238. Its totient is φ = 104965920.

The previous prime is 131207413. The next prime is 131207441. The reversal of 131207425 is 524702131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 33454656 + 97752769 = 5784^2 + 9887^2 .

It is not a de Polignac number, because 131207425 - 2⁵ = 131207393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5248297 = 131207425 / (1 + 3 + 1 + 2 + 0 + 7 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131207425.

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, 2624124 + ... + 2624173.

Almost surely, 2^131207425 is an apocalyptic number.

It is an amenable number.

131207425 is a deficient number, since it is larger than the sum of its proper divisors (31489813).

131207425 is an equidigital number, since it uses as much as digits as its factorization.

131207425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5248307 (or 5248302 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 131207425 is about 11454.5809613447. The cubic root of 131207425 is about 508.1432225284.

Adding to 131207425 its reverse (524702131), we get a palindrome (655909556).

The spelling of 131207425 in words is "one hundred thirty-one million, two hundred seven thousand, four hundred twenty-five".