2131113225 has 12 divisors (see below), whose sum is σ = 3523440656. Its totient is φ = 1136593680.

The previous prime is 2131113221. The next prime is 2131113253. The reversal of 2131113225 is 5223111312.

It is not a de Polignac number, because 2131113225 - 2² = 2131113221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131113221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14207347 + ... + 14207496.

Almost surely, 2^2131113225 is an apocalyptic number.

2131113225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2131113225 is a deficient number, since it is larger than the sum of its proper divisors (1392327431).

2131113225 is a wasteful number, since it uses less digits than its factorization.

2131113225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28414856 (or 28414851 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 2131113225 is about 46163.9819014781. The cubic root of 2131113225 is about 1286.8724638453.

Adding to 2131113225 its reverse (5223111312), we get a palindrome (7354224537).

The spelling of 2131113225 in words is "two billion, one hundred thirty-one million, one hundred thirteen thousand, two hundred twenty-five".