225126411721 has 4 divisors (see below), whose sum is σ = 230361909712. Its totient is φ = 219890913732.

The previous prime is 225126411707. The next prime is 225126411749. The reversal of 225126411721 is 127114621522.

225126411721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 225126411721 - 2¹³ = 225126403529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225126411821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617748931 + ... + 2617749016.

It is an arithmetic number, because the mean of its divisors is an integer number (57590477428).

Almost surely, 2^225126411721 is an apocalyptic number.

It is an amenable number.

225126411721 is a deficient number, since it is larger than the sum of its proper divisors (5235497991).

225126411721 is an equidigital number, since it uses as much as digits as its factorization.

225126411721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235497990.

The product of its digits is 13440, while the sum is 34.

The spelling of 225126411721 in words is "two hundred twenty-five billion, one hundred twenty-six million, four hundred eleven thousand, seven hundred twenty-one".