225235012521 has 8 divisors (see below), whose sum is σ = 307297381600. Its totient is φ = 146664659232.

The previous prime is 225235012493. The next prime is 225235012537. The reversal of 225235012521 is 125210532522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225235012521 - 2⁷ = 225235012393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225235012021) 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, 873003796 + ... + 873004053.

It is an arithmetic number, because the mean of its divisors is an integer number (38412172700).

Almost surely, 2^225235012521 is an apocalyptic number.

It is an amenable number.

225235012521 is a deficient number, since it is larger than the sum of its proper divisors (82062369079).

225235012521 is a wasteful number, since it uses less digits than its factorization.

225235012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746007895.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 225235012521 in words is "two hundred twenty-five billion, two hundred thirty-five million, twelve thousand, five hundred twenty-one".