225022001 has 4 divisors (see below), whose sum is σ = 225134400. Its totient is φ = 224909604.

The previous prime is 225021971. The next prime is 225022003. The reversal of 225022001 is 100220522.

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 a cyclic number.

It is not a de Polignac number, because 225022001 - 2²⁶ = 157913137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225022003) 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, 53141 + ... + 57218.

It is an arithmetic number, because the mean of its divisors is an integer number (56283600).

Almost surely, 2^225022001 is an apocalyptic number.

It is an amenable number.

225022001 is a deficient number, since it is larger than the sum of its proper divisors (112399).

225022001 is a wasteful number, since it uses less digits than its factorization.

225022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112398.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 225022001 is about 15000.7333487400. The cubic root of 225022001 is about 608.2400232855.

Adding to 225022001 its reverse (100220522), we get a palindrome (325242523).

The spelling of 225022001 in words is "two hundred twenty-five million, twenty-two thousand, one".