225521053205 has 32 divisors (see below), whose sum is σ = 311223306240. Its totient is φ = 153677076480.

The previous prime is 225521053193. The next prime is 225521053231. The reversal of 225521053205 is 502350125522.

It is not a de Polignac number, because 225521053205 - 2¹² = 225521049109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4012457 + ... + 4068273.

It is an arithmetic number, because the mean of its divisors is an integer number (9725728320).

Almost surely, 2^225521053205 is an apocalyptic number.

It is an amenable number.

225521053205 is a deficient number, since it is larger than the sum of its proper divisors (85702253035).

225521053205 is a wasteful number, since it uses less digits than its factorization.

225521053205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56549.

The product of its (nonzero) digits is 30000, while the sum is 32.

Adding to 225521053205 its reverse (502350125522), we get a palindrome (727871178727).

The spelling of 225521053205 in words is "two hundred twenty-five billion, five hundred twenty-one million, fifty-three thousand, two hundred five".