225240001 has 4 divisors (see below), whose sum is σ = 257417152. Its totient is φ = 193062852.

The previous prime is 225239969. The next prime is 225240007. The reversal of 225240001 is 100042522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100042522 = 2 ⋅50021261.

It is a cyclic number.

It is not a de Polignac number, because 225240001 - 2⁵ = 225239969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225240007) 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, 16088565 + ... + 16088578.

It is an arithmetic number, because the mean of its divisors is an integer number (64354288).

Almost surely, 2^225240001 is an apocalyptic number.

It is an amenable number.

225240001 is a deficient number, since it is larger than the sum of its proper divisors (32177151).

225240001 is an equidigital number, since it uses as much as digits as its factorization.

225240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32177150.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 225240001 is about 15007.9979011193. The cubic root of 225240001 is about 608.4363796832.

Adding to 225240001 its reverse (100042522), we get a palindrome (325282523).

The spelling of 225240001 in words is "two hundred twenty-five million, two hundred forty thousand, one".