225864101 has 4 divisors (see below), whose sum is σ = 226001100. Its totient is φ = 225727104.

The previous prime is 225864097. The next prime is 225864103. The reversal of 225864101 is 101468522.

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 109202500 + 116661601 = 10450^2 + 10801^2 .

It is a cyclic number.

It is not a de Polignac number, because 225864101 - 2² = 225864097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225864103) 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, 65996 + ... + 69333.

It is an arithmetic number, because the mean of its divisors is an integer number (56500275).

Almost surely, 2^225864101 is an apocalyptic number.

It is an amenable number.

225864101 is a deficient number, since it is larger than the sum of its proper divisors (136999).

225864101 is a wasteful number, since it uses less digits than its factorization.

225864101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136998.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 225864101 is about 15028.7757651779. The cubic root of 225864101 is about 608.9978178008.

The spelling of 225864101 in words is "two hundred twenty-five million, eight hundred sixty-four thousand, one hundred one".