225059561 has 4 divisors (see below), whose sum is σ = 228749124. Its totient is φ = 221370000.

The previous prime is 225059557. The next prime is 225059599. The reversal of 225059561 is 165950522.

225059561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27825625 + 197233936 = 5275^2 + 14044^2 .

It is a cyclic number.

It is not a de Polignac number, because 225059561 - 2² = 225059557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225059521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844690 + ... + 1844811.

It is an arithmetic number, because the mean of its divisors is an integer number (57187281).

Almost surely, 2^225059561 is an apocalyptic number.

It is an amenable number.

225059561 is a deficient number, since it is larger than the sum of its proper divisors (3689563).

225059561 is an equidigital number, since it uses as much as digits as its factorization.

225059561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689562.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 225059561 is about 15001.9852352947. The cubic root of 225059561 is about 608.2738632718.

The spelling of 225059561 in words is "two hundred twenty-five million, fifty-nine thousand, five hundred sixty-one".