225045601 has 6 divisors (see below), whose sum is σ = 247364306. Its totient is φ = 204586800.

The previous prime is 225045599. The next prime is 225045607. The reversal of 225045601 is 106540522.

It can be written as a sum of positive squares in only one way, i.e., 196700625 + 28344976 = 14025^2 + 5324^2 .

It is not a de Polignac number, because 225045601 - 2¹ = 225045599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225045607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 929820 + ... + 930061.

Almost surely, 2^225045601 is an apocalyptic number.

It is an amenable number.

225045601 is a deficient number, since it is larger than the sum of its proper divisors (22318705).

225045601 is a wasteful number, since it uses less digits than its factorization.

225045601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859903 (or 1859892 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 225045601 is about 15001.5199563244. The cubic root of 225045601 is about 608.2612863363.

The spelling of 225045601 in words is "two hundred twenty-five million, forty-five thousand, six hundred one".