131145125 has 16 divisors (see below), whose sum is σ = 172286400. Its totient is φ = 99392400.

The previous prime is 131145121. The next prime is 131145127. The reversal of 131145125 is 521541131.

It is not a de Polignac number, because 131145125 - 2² = 131145121 is a prime.

It is a super-2 number, since 2×131145125² = 34398087622531250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131145125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131145121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25235 + ... + 29984.

It is an arithmetic number, because the mean of its divisors is an integer number (10767900).

Almost surely, 2^131145125 is an apocalyptic number.

It is an amenable number.

131145125 is a deficient number, since it is larger than the sum of its proper divisors (41141275).

131145125 is an equidigital number, since it uses as much as digits as its factorization.

131145125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55253 (or 55243 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 131145125 is about 11451.8612024422. The cubic root of 131145125 is about 508.0627841574.

Adding to 131145125 its reverse (521541131), we get a palindrome (652686256).

The spelling of 131145125 in words is "one hundred thirty-one million, one hundred forty-five thousand, one hundred twenty-five".