225665407124 has 24 divisors (see below), whose sum is σ = 398738044320. Its totient is φ = 111741293664.

The previous prime is 225665407081. The next prime is 225665407147. The reversal of 225665407124 is 421704566522.

It is a congruent number.

It is an unprimeable number.

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, 744107 + ... + 1002509.

It is an arithmetic number, because the mean of its divisors is an integer number (16614085180).

Almost surely, 2^225665407124 is an apocalyptic number.

It is an amenable number.

225665407124 is a deficient number, since it is larger than the sum of its proper divisors (173072637196).

225665407124 is a wasteful number, since it uses less digits than its factorization.

225665407124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260519 (or 260517 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 225665407124 in words is "two hundred twenty-five billion, six hundred sixty-five million, four hundred seven thousand, one hundred twenty-four".