225653711121 has 36 divisors (see below), whose sum is σ = 346464584752. Its totient is φ = 141496965504.

The previous prime is 225653711111. The next prime is 225653711131. The reversal of 225653711121 is 121117356522.

225653711121 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 537 + 1 + 112 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (225653711111) and next prime (225653711131).

It is not a de Polignac number, because 225653711121 - 2⁷ = 225653710993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225653711111) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4205166 + ... + 4258488.

Almost surely, 2^225653711121 is an apocalyptic number.

It is an amenable number.

225653711121 is a deficient number, since it is larger than the sum of its proper divisors (120810873631).

225653711121 is a wasteful number, since it uses less digits than its factorization.

225653711121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54990 (or 54970 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The spelling of 225653711121 in words is "two hundred twenty-five billion, six hundred fifty-three million, seven hundred eleven thousand, one hundred twenty-one".