225730646645 has 32 divisors (see below), whose sum is σ = 311076108288. Its totient is φ = 154036024128.

The previous prime is 225730646639. The next prime is 225730646651. The reversal of 225730646645 is 546646037522.

It is an interprime number because it is at equal distance from previous prime (225730646639) and next prime (225730646651).

It is a de Polignac number, because none of the positive numbers 2^k-225730646645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225730646593 and 225730646602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23059442 + ... + 23069228.

It is an arithmetic number, because the mean of its divisors is an integer number (9721128384).

Almost surely, 2^225730646645 is an apocalyptic number.

It is an amenable number.

225730646645 is a deficient number, since it is larger than the sum of its proper divisors (85345461643).

225730646645 is a wasteful number, since it uses less digits than its factorization.

225730646645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12929.

The product of its (nonzero) digits is 7257600, while the sum is 50.

The spelling of 225730646645 in words is "two hundred twenty-five billion, seven hundred thirty million, six hundred forty-six thousand, six hundred forty-five".