225312204505 has 16 divisors (see below), whose sum is σ = 274432458960. Its totient is φ = 177563674368.

The previous prime is 225312204503. The next prime is 225312204521. The reversal of 225312204505 is 505402213522.

It can be written as a sum of positive squares in 8 ways, for example, as 28803520656 + 196508683849 = 169716^2 + 443293^2 .

It is a cyclic number.

It is not a de Polignac number, because 225312204505 - 2¹ = 225312204503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225312204503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100562 + ... + 1289131.

It is an arithmetic number, because the mean of its divisors is an integer number (17152028685).

Almost surely, 2^225312204505 is an apocalyptic number.

It is an amenable number.

225312204505 is a deficient number, since it is larger than the sum of its proper divisors (49120254455).

225312204505 is a wasteful number, since it uses less digits than its factorization.

225312204505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389980.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 225312204505 in words is "two hundred twenty-five billion, three hundred twelve million, two hundred four thousand, five hundred five".