225665666706 has 16 divisors (see below), whose sum is σ = 466894483200. Its totient is φ = 72628030608.

The previous prime is 225665666657. The next prime is 225665666729. The reversal of 225665666706 is 607666566522.

It is a super-3 number, since 3×225665666706³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648464386 + ... + 648464733.

It is an arithmetic number, because the mean of its divisors is an integer number (29180905200).

Almost surely, 2^225665666706 is an apocalyptic number.

225665666706 is an abundant number, since it is smaller than the sum of its proper divisors (241228816494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225665666706 is a wasteful number, since it uses less digits than its factorization.

225665666706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296929153.

The product of its (nonzero) digits is 32659200, while the sum is 57.

The spelling of 225665666706 in words is "two hundred twenty-five billion, six hundred sixty-five million, six hundred sixty-six thousand, seven hundred six".