131135225 has 24 divisors (see below), whose sum is σ = 177613632. Its totient is φ = 95457600.

The previous prime is 131135203. The next prime is 131135227. The reversal of 131135225 is 522531131.

It is a happy number.

It is not a de Polignac number, because 131135225 - 2¹² = 131131129 is a prime.

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 131135225.

It is not an unprimeable number, because it can be changed into a prime (131135227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20234 + ... + 25916.

It is an arithmetic number, because the mean of its divisors is an integer number (7400568).

Almost surely, 2^131135225 is an apocalyptic number.

It is an amenable number.

131135225 is a deficient number, since it is larger than the sum of its proper divisors (46478407).

131135225 is a wasteful number, since it uses less digits than its factorization.

131135225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777 (or 5772 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 131135225 is about 11451.4289501354. The cubic root of 131135225 is about 508.0499994704.

Adding to 131135225 its reverse (522531131), we get a palindrome (653666356).

The spelling of 131135225 in words is "one hundred thirty-one million, one hundred thirty-five thousand, two hundred twenty-five".