225052254221 has 8 divisors (see below), whose sum is σ = 226001073144. Its totient is φ = 224103559680.

The previous prime is 225052254187. The next prime is 225052254227. The reversal of 225052254221 is 122452250522.

It can be written as a sum of positive squares in 4 ways, for example, as 26483982121 + 198568272100 = 162739^2 + 445610^2 .

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-225052254221 is a prime.

It is a super-2 number, since 2×225052254221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225052254227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6227015 + ... + 6263051.

It is an arithmetic number, because the mean of its divisors is an integer number (28250134143).

Almost surely, 2^225052254221 is an apocalyptic number.

It is an amenable number.

225052254221 is a deficient number, since it is larger than the sum of its proper divisors (948818923).

225052254221 is a wasteful number, since it uses less digits than its factorization.

225052254221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62191.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 225052254221 in words is "two hundred twenty-five billion, fifty-two million, two hundred fifty-four thousand, two hundred twenty-one".