225642012211225 has 48 divisors (see below), whose sum is σ = 287229411944640. Its totient is φ = 175745180217600.

The previous prime is 225642012211169. The next prime is 225642012211237. The reversal of 225642012211225 is 522112210246522.

It is a happy number.

It is not a de Polignac number, because 225642012211225 - 2¹⁷ = 225642012080153 is a prime.

It is a super-2 number, since 2×225642012211225² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6562968535 + ... + 6563002915.

It is an arithmetic number, because the mean of its divisors is an integer number (5983946082180).

Almost surely, 2^{225642012211225} is an apocalyptic number.

225642012211225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225642012211225 is a deficient number, since it is larger than the sum of its proper divisors (61587399733415).

225642012211225 is a wasteful number, since it uses less digits than its factorization.

225642012211225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54010 (or 54005 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 225642012211225 its reverse (522112210246522), we get a palindrome (747754222457747).

The spelling of 225642012211225 in words is "two hundred twenty-five trillion, six hundred forty-two billion, twelve million, two hundred eleven thousand, two hundred twenty-five".