225120566233561 has 32 divisors (see below), whose sum is σ = 252116920251648. Its totient is φ = 199920568995840.

The previous prime is 225120566233553. The next prime is 225120566233597. The reversal of 225120566233561 is 165332665021522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 225120566233561 - 2³ = 225120566233553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225120566239561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2751286 + ... + 21396511.

It is an arithmetic number, because the mean of its divisors is an integer number (7878653757864).

Almost surely, 2^{225120566233561} is an apocalyptic number.

It is an amenable number.

225120566233561 is a deficient number, since it is larger than the sum of its proper divisors (26996354018087).

225120566233561 is a wasteful number, since it uses less digits than its factorization.

225120566233561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24148161.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 225120566233561 in words is "two hundred twenty-five trillion, one hundred twenty billion, five hundred sixty-six million, two hundred thirty-three thousand, five hundred sixty-one".