225605001 has 16 divisors (see below), whose sum is σ = 309012480. Its totient is φ = 146321280.

The previous prime is 225604997. The next prime is 225605027. The reversal of 225605001 is 100506522.

It is not a de Polignac number, because 225605001 - 2² = 225604997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225605041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44715 + ... + 49503.

It is an arithmetic number, because the mean of its divisors is an integer number (19313280).

Almost surely, 2^225605001 is an apocalyptic number.

It is an amenable number.

225605001 is a deficient number, since it is larger than the sum of its proper divisors (83407479).

225605001 is a wasteful number, since it uses less digits than its factorization.

225605001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 225605001 is about 15020.1531616692. The cubic root of 225605001 is about 608.7648580857.

The spelling of 225605001 in words is "two hundred twenty-five million, six hundred five thousand, one".