225521306331 has 8 divisors (see below), whose sum is σ = 300747402000. Its totient is φ = 150321374112.

The previous prime is 225521306293. The next prime is 225521306369. The reversal of 225521306331 is 133603125522.

It is an interprime number because it is at equal distance from previous prime (225521306293) and next prime (225521306369).

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

It is not a de Polignac number, because 225521306331 - 2⁷ = 225521306203 is a prime.

It is a super-2 number, since 2×225521306331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225521306292 and 225521306301.

It is not an unprimeable number, because it can be changed into a prime (225521306431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6520740 + ... + 6555233.

It is an arithmetic number, because the mean of its divisors is an integer number (37593425250).

Almost surely, 2^225521306331 is an apocalyptic number.

225521306331 is a deficient number, since it is larger than the sum of its proper divisors (75226095669).

225521306331 is a wasteful number, since it uses less digits than its factorization.

225521306331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13081725.

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 225521306331 in words is "two hundred twenty-five billion, five hundred twenty-one million, three hundred six thousand, three hundred thirty-one".