255421155402229 has 2 divisors, whose sum is σ = 255421155402230. Its totient is φ = 255421155402228.

The previous prime is 255421155402197. The next prime is 255421155402263. The reversal of 255421155402229 is 922204551124552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174187256792004 + 81233898610225 = 13198002^2 + 9012985^2 .

It is a cyclic number.

It is not a de Polignac number, because 255421155402229 - 2⁵ = 255421155402197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255421155402289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127710577701114 + 127710577701115.

It is an arithmetic number, because the mean of its divisors is an integer number (127710577701115).

Almost surely, 2^{255421155402229} is an apocalyptic number.

It is an amenable number.

255421155402229 is a deficient number, since it is larger than the sum of its proper divisors (1).

255421155402229 is an equidigital number, since it uses as much as digits as its factorization.

255421155402229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880000, while the sum is 49.

The spelling of 255421155402229 in words is "two hundred fifty-five trillion, four hundred twenty-one billion, one hundred fifty-five million, four hundred two thousand, two hundred twenty-nine".