225500001 has 8 divisors (see below), whose sum is σ = 306339840. Its totient is φ = 147496752.

The previous prime is 225499997. The next prime is 225500003. The reversal of 225500001 is 100005522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225500001 - 2² = 225499997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225500003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708961 + ... + 709278.

It is an arithmetic number, because the mean of its divisors is an integer number (38292480).

Almost surely, 2^225500001 is an apocalyptic number.

It is an amenable number.

225500001 is a deficient number, since it is larger than the sum of its proper divisors (80839839).

225500001 is a wasteful number, since it uses less digits than its factorization.

225500001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418295.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 225500001 is about 15016.6574509776. The cubic root of 225500001 is about 608.6704006211.

Adding to 225500001 its reverse (100005522), we get a palindrome (325505523).

The spelling of 225500001 in words is "two hundred twenty-five million, five hundred thousand, one".