225131720233 has 16 divisors (see below), whose sum is σ = 273516704640. Its totient is φ = 181003680000.

The previous prime is 225131720227. The next prime is 225131720251. The reversal of 225131720233 is 332027131522.

It is a cyclic number.

It is not a de Polignac number, because 225131720233 - 2²⁵ = 225098165801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225131720195 and 225131720204.

It is not an unprimeable number, because it can be changed into a prime (225131720263) 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, 8366368 + ... + 8393233.

It is an arithmetic number, because the mean of its divisors is an integer number (17094794040).

Almost surely, 2^225131720233 is an apocalyptic number.

It is an amenable number.

225131720233 is a deficient number, since it is larger than the sum of its proper divisors (48384984407).

225131720233 is a wasteful number, since it uses less digits than its factorization.

225131720233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16759728.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 225131720233 its reverse (332027131522), we get a palindrome (557158851755).

The spelling of 225131720233 in words is "two hundred twenty-five billion, one hundred thirty-one million, seven hundred twenty thousand, two hundred thirty-three".