225730646646 has 32 divisors (see below), whose sum is σ = 466048598400. Its totient is φ = 72843302784.

The previous prime is 225730646639. The next prime is 225730646651. The reversal of 225730646646 is 646646037522.

It is a super-2 number, since 2×225730646646² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3842196 + ... + 3900503.

It is an arithmetic number, because the mean of its divisors is an integer number (14564018700).

Almost surely, 2^225730646646 is an apocalyptic number.

225730646646 is an abundant number, since it is smaller than the sum of its proper divisors (240317951754).

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

225730646646 is a wasteful number, since it uses less digits than its factorization.

225730646646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7742860.

The product of its (nonzero) digits is 8709120, while the sum is 51.

The spelling of 225730646646 in words is "two hundred twenty-five billion, seven hundred thirty million, six hundred forty-six thousand, six hundred forty-six".