225125741221 has 4 divisors (see below), whose sum is σ = 225805879744. Its totient is φ = 224445602700.

The previous prime is 225125741219. The next prime is 225125741231. The reversal of 225125741221 is 122147521522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225125741221 - 2¹ = 225125741219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225125741201) 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 3 ways as a sum of consecutive naturals, for example, 340068765 + ... + 340069426.

It is an arithmetic number, because the mean of its divisors is an integer number (56451469936).

Almost surely, 2^225125741221 is an apocalyptic number.

It is an amenable number.

225125741221 is a deficient number, since it is larger than the sum of its proper divisors (680138523).

225125741221 is an equidigital number, since it uses as much as digits as its factorization.

225125741221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680138522.

The product of its digits is 22400, while the sum is 34.

The spelling of 225125741221 in words is "two hundred twenty-five billion, one hundred twenty-five million, seven hundred forty-one thousand, two hundred twenty-one".