225556451101 has 2 divisors, whose sum is σ = 225556451102. Its totient is φ = 225556451100.

The previous prime is 225556451047. The next prime is 225556451119. The reversal of 225556451101 is 101154655522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211507090201 + 14049360900 = 459899^2 + 118530^2 .

It is a cyclic number.

It is not a de Polignac number, because 225556451101 - 2²¹ = 225554353949 is a prime.

It is a super-2 number, since 2×225556451101² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225556451161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112778225550 + 112778225551.

It is an arithmetic number, because the mean of its divisors is an integer number (112778225551).

Almost surely, 2^225556451101 is an apocalyptic number.

It is an amenable number.

225556451101 is a deficient number, since it is larger than the sum of its proper divisors (1).

225556451101 is an equidigital number, since it uses as much as digits as its factorization.

225556451101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 225556451101 in words is "two hundred twenty-five billion, five hundred fifty-six million, four hundred fifty-one thousand, one hundred one".