225523262521321 has 16 divisors (see below), whose sum is σ = 237527040421440. Its totient is φ = 213532921967040.

The previous prime is 225523262521309. The next prime is 225523262521363. The reversal of 225523262521321 is 123125262325522.

It is a cyclic number.

It is not a de Polignac number, because 225523262521321 - 2¹⁷ = 225523262390249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225523262522321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341802066 + ... + 342461236.

It is an arithmetic number, because the mean of its divisors is an integer number (14845440026340).

Almost surely, 2^{225523262521321} is an apocalyptic number.

It is an amenable number.

225523262521321 is a deficient number, since it is larger than the sum of its proper divisors (12003777900119).

225523262521321 is a wasteful number, since it uses less digits than its factorization.

225523262521321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669336.

The product of its digits is 864000, while the sum is 43.

The spelling of 225523262521321 in words is "two hundred twenty-five trillion, five hundred twenty-three billion, two hundred sixty-two million, five hundred twenty-one thousand, three hundred twenty-one".