225556451111 has 4 divisors (see below), whose sum is σ = 233334259800. Its totient is φ = 217778642424.

The previous prime is 225556451101. The next prime is 225556451119. The reversal of 225556451111 is 111154655522.

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 225556451111 - 2⁶ = 225556451047 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 (225556451119) 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, 3888904301 + ... + 3888904358.

It is an arithmetic number, because the mean of its divisors is an integer number (58333564950).

Almost surely, 2^225556451111 is an apocalyptic number.

225556451111 is a deficient number, since it is larger than the sum of its proper divisors (7777808689).

225556451111 is an equidigital number, since it uses as much as digits as its factorization.

225556451111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7777808688.

The product of its digits is 60000, while the sum is 38.

The spelling of 225556451111 in words is "two hundred twenty-five billion, five hundred fifty-six million, four hundred fifty-one thousand, one hundred eleven".