225131747737 has 4 divisors (see below), whose sum is σ = 242449574500. Its totient is φ = 207813920976.

The previous prime is 225131747689. The next prime is 225131747837. The reversal of 225131747737 is 737747131522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 737747131522 = 2 ⋅368873565761.

It can be written as a sum of positive squares in 2 ways, for example, as 132189689241 + 92942058496 = 363579^2 + 304864^2 .

It is a cyclic number.

It is not a de Polignac number, because 225131747737 - 2³⁵ = 190772009369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225131747537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658913362 + ... + 8658913387.

It is an arithmetic number, because the mean of its divisors is an integer number (60612393625).

Almost surely, 2^225131747737 is an apocalyptic number.

It is an amenable number.

225131747737 is a deficient number, since it is larger than the sum of its proper divisors (17317826763).

225131747737 is a wasteful number, since it uses less digits than its factorization.

225131747737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17317826762.

The product of its digits is 1728720, while the sum is 49.

The spelling of 225131747737 in words is "two hundred twenty-five billion, one hundred thirty-one million, seven hundred forty-seven thousand, seven hundred thirty-seven".