225963653561 has 8 divisors (see below), whose sum is σ = 227028668064. Its totient is φ = 224899692480.

The previous prime is 225963653521. The next prime is 225963653563. The reversal of 225963653561 is 165356369522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225963653561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225963653563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168326 + ... + 693008.

It is an arithmetic number, because the mean of its divisors is an integer number (28378583508).

Almost surely, 2^225963653561 is an apocalyptic number.

It is an amenable number.

225963653561 is a deficient number, since it is larger than the sum of its proper divisors (1065014503).

225963653561 is a wasteful number, since it uses less digits than its factorization.

225963653561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526711.

The product of its digits is 8748000, while the sum is 53.

The spelling of 225963653561 in words is "two hundred twenty-five billion, nine hundred sixty-three million, six hundred fifty-three thousand, five hundred sixty-one".