225320001 has 4 divisors (see below), whose sum is σ = 300426672. Its totient is φ = 150213332.

The previous prime is 225319999. The next prime is 225320003. The reversal of 225320001 is 100023522.

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.

It is an interprime number because it is at equal distance from previous prime (225319999) and next prime (225320003).

It is a cyclic number.

It is not a de Polignac number, because 225320001 - 2¹ = 225319999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225320003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37553331 + ... + 37553336.

It is an arithmetic number, because the mean of its divisors is an integer number (75106668).

Almost surely, 2^225320001 is an apocalyptic number.

It is an amenable number.

225320001 is a deficient number, since it is larger than the sum of its proper divisors (75106671).

225320001 is an equidigital number, since it uses as much as digits as its factorization.

225320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75106670.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 225320001 is about 15010.6629100783. The cubic root of 225320001 is about 608.5084052982.

Adding to 225320001 its reverse (100023522), we get a palindrome (325343523).

The spelling of 225320001 in words is "two hundred twenty-five million, three hundred twenty thousand, one".