225401111 has 4 divisors (see below), whose sum is σ = 242739672. Its totient is φ = 208062552.

The previous prime is 225401107. The next prime is 225401119. The reversal of 225401111 is 111104522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225401111 - 2² = 225401107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225401111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225401119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8669261 + ... + 8669286.

It is an arithmetic number, because the mean of its divisors is an integer number (60684918).

Almost surely, 2^225401111 is an apocalyptic number.

225401111 is a deficient number, since it is larger than the sum of its proper divisors (17338561).

225401111 is a wasteful number, since it uses less digits than its factorization.

225401111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17338560.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 225401111 is about 15013.3644130821. The cubic root of 225401111 is about 608.5814128658.

Adding to 225401111 its reverse (111104522), we get a palindrome (336505633).

The spelling of 225401111 in words is "two hundred twenty-five million, four hundred one thousand, one hundred eleven".