22555506256429 has 2 divisors, whose sum is σ = 22555506256430. Its totient is φ = 22555506256428.

The previous prime is 22555506256343. The next prime is 22555506256453. The reversal of 22555506256429 is 92465260555522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19353858087204 + 3201648169225 = 4399302^2 + 1789315^2 .

It is a cyclic number.

It is not a de Polignac number, because 22555506256429 - 2⁹ = 22555506255917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22555506266429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277753128214 + 11277753128215.

It is an arithmetic number, because the mean of its divisors is an integer number (11277753128215).

Almost surely, 2^{22555506256429} is an apocalyptic number.

It is an amenable number.

22555506256429 is a deficient number, since it is larger than the sum of its proper divisors (1).

22555506256429 is an equidigital number, since it uses as much as digits as its factorization.

22555506256429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800000, while the sum is 58.

The spelling of 22555506256429 in words is "twenty-two trillion, five hundred fifty-five billion, five hundred six million, two hundred fifty-six thousand, four hundred twenty-nine".