225100561 has 12 divisors (see below), whose sum is σ = 262286640. Its totient is φ = 192622920.

The previous prime is 225100559. The next prime is 225100643. The reversal of 225100561 is 165001522.

It is not a de Polignac number, because 225100561 - 2¹ = 225100559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225100511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28806 + ... + 35776.

It is an arithmetic number, because the mean of its divisors is an integer number (21857220).

Almost surely, 2^225100561 is an apocalyptic number.

It is an amenable number.

225100561 is a deficient number, since it is larger than the sum of its proper divisors (37186079).

225100561 is an equidigital number, since it uses as much as digits as its factorization.

225100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644 (or 7637 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 225100561 is about 15003.3516588794. The cubic root of 225100561 is about 608.3107982561.

The spelling of 225100561 in words is "two hundred twenty-five million, one hundred thousand, five hundred sixty-one".