225724275561 has 32 divisors (see below), whose sum is σ = 316725552000. Its totient is φ = 142783950848.

The previous prime is 225724275559. The next prime is 225724275577. The reversal of 225724275561 is 165572427522.

It is not a de Polignac number, because 225724275561 - 2¹ = 225724275559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225724275561.

It is not an unprimeable number, because it can be changed into a prime (225724275521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22010311 + ... + 22020563.

It is an arithmetic number, because the mean of its divisors is an integer number (9897673500).

Almost surely, 2^225724275561 is an apocalyptic number.

It is an amenable number.

225724275561 is a deficient number, since it is larger than the sum of its proper divisors (91001276439).

225724275561 is a wasteful number, since it uses less digits than its factorization.

225724275561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14633.

The product of its digits is 2352000, while the sum is 48.

The spelling of 225724275561 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred seventy-five thousand, five hundred sixty-one".