225326637221 has 8 divisors (see below), whose sum is σ = 257978488320. Its totient is φ = 192790369008.

The previous prime is 225326637197. The next prime is 225326637223. The reversal of 225326637221 is 122736623522.

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

It is a cyclic number.

It is not a de Polignac number, because 225326637221 - 2¹⁴ = 225326620837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225326637223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28891541 + ... + 28899338.

It is an arithmetic number, because the mean of its divisors is an integer number (32247311040).

Almost surely, 2^225326637221 is an apocalyptic number.

It is an amenable number.

225326637221 is a deficient number, since it is larger than the sum of its proper divisors (32651851099).

225326637221 is an equidigital number, since it uses as much as digits as its factorization.

225326637221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57791443.

The product of its digits is 362880, while the sum is 41.

The spelling of 225326637221 in words is "two hundred twenty-five billion, three hundred twenty-six million, six hundred thirty-seven thousand, two hundred twenty-one".