225615754566 has 40 divisors (see below), whose sum is σ = 507193255800. Its totient is φ = 74960266752.

The previous prime is 225615754531. The next prime is 225615754579. The reversal of 225615754566 is 665457516522.

225615754566 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 1 + 5 + 75 + 4 + 566 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2218491 + ... + 2317958.

It is an arithmetic number, because the mean of its divisors is an integer number (12679831395).

Almost surely, 2^225615754566 is an apocalyptic number.

225615754566 is an abundant number, since it is smaller than the sum of its proper divisors (281577501234).

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

225615754566 is a wasteful number, since it uses less digits than its factorization.

225615754566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536770 (or 4536761 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 225615754566 in words is "two hundred twenty-five billion, six hundred fifteen million, seven hundred fifty-four thousand, five hundred sixty-six".