225342201521 has 8 divisors (see below), whose sum is σ = 226376895360. Its totient is φ = 224307876528.

The previous prime is 225342201493. The next prime is 225342201551. The reversal of 225342201521 is 125102243522.

It is a happy number.

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 225342201521 - 2⁶ = 225342201457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225342201551) 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, 1172120 + ... + 1350758.

It is an arithmetic number, because the mean of its divisors is an integer number (28297111920).

Almost surely, 2^225342201521 is an apocalyptic number.

It is an amenable number.

225342201521 is a deficient number, since it is larger than the sum of its proper divisors (1034693839).

225342201521 is a wasteful number, since it uses less digits than its factorization.

225342201521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184423.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 225342201521 in words is "two hundred twenty-five billion, three hundred forty-two million, two hundred one thousand, five hundred twenty-one".