225656020111 has 4 divisors (see below), whose sum is σ = 226488699424. Its totient is φ = 224823340800.

The previous prime is 225656020097. The next prime is 225656020123. The reversal of 225656020111 is 111020656522.

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 225656020111 - 2⁹ = 225656019599 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 (225656020151) 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, 416339250 + ... + 416339791.

It is an arithmetic number, because the mean of its divisors is an integer number (56622174856).

Almost surely, 2^225656020111 is an apocalyptic number.

225656020111 is a deficient number, since it is larger than the sum of its proper divisors (832679313).

225656020111 is an equidigital number, since it uses as much as digits as its factorization.

225656020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832679312.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 225656020111 its reverse (111020656522), we get a palindrome (336676676633).

The spelling of 225656020111 in words is "two hundred twenty-five billion, six hundred fifty-six million, twenty thousand, one hundred eleven".