225661215004 has 24 divisors (see below), whose sum is σ = 406684051200. Its totient is φ = 109514187120.

The previous prime is 225661215001. The next prime is 225661215029. The reversal of 225661215004 is 400512166522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225661215001) 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, 6033202 + ... + 6070489.

It is an arithmetic number, because the mean of its divisors is an integer number (16945168800).

Almost surely, 2^225661215004 is an apocalyptic number.

It is an amenable number.

225661215004 is a deficient number, since it is larger than the sum of its proper divisors (181022836196).

225661215004 is a wasteful number, since it uses less digits than its factorization.

225661215004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103833 (or 12103831 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 225661215004 in words is "two hundred twenty-five billion, six hundred sixty-one million, two hundred fifteen thousand, four".