225234153120421 has 8 divisors (see below), whose sum is σ = 238739930570520. Its totient is φ = 211756898961408.

The previous prime is 225234153120373. The next prime is 225234153120443. The reversal of 225234153120421 is 124021351432522.

It can be written as a sum of positive squares in 4 ways, for example, as 27858656296900 + 197375496823521 = 5278130^2 + 14049039^2 .

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 225234153120421 - 2⁷ = 225234153120293 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 (225234153120491) 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, 7130806506 + ... + 7130838091.

It is an arithmetic number, because the mean of its divisors is an integer number (29842491321315).

Almost surely, 2^{225234153120421} is an apocalyptic number.

It is an amenable number.

225234153120421 is a deficient number, since it is larger than the sum of its proper divisors (13505777450099).

225234153120421 is a wasteful number, since it uses less digits than its factorization.

225234153120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14261645543.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 225234153120421 in words is "two hundred twenty-five trillion, two hundred thirty-four billion, one hundred fifty-three million, one hundred twenty thousand, four hundred twenty-one".