225122576521 has 8 divisors (see below), whose sum is σ = 238280369600. Its totient is φ = 212095707120.

The previous prime is 225122576519. The next prime is 225122576537. The reversal of 225122576521 is 125675221522.

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 225122576521 - 2¹ = 225122576519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225122576221) 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, 32727381 + ... + 32734258.

It is an arithmetic number, because the mean of its divisors is an integer number (29785046200).

Almost surely, 2^225122576521 is an apocalyptic number.

It is an amenable number.

225122576521 is a deficient number, since it is larger than the sum of its proper divisors (13157793079).

225122576521 is a wasteful number, since it uses less digits than its factorization.

225122576521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65461839.

The product of its digits is 168000, while the sum is 40.

The spelling of 225122576521 in words is "two hundred twenty-five billion, one hundred twenty-two million, five hundred seventy-six thousand, five hundred twenty-one".