655425752173 has 2 divisors, whose sum is σ = 655425752174. Its totient is φ = 655425752172.

The previous prime is 655425752141. The next prime is 655425752239. The reversal of 655425752173 is 371257524556.

655425752173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430154963044 + 225270789129 = 655862^2 + 474627^2 .

It is a cyclic number.

It is not a de Polignac number, because 655425752173 - 2⁵ = 655425752141 is a prime.

It is a super-2 number, since 2×655425752173² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655425752173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655425752473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327712876086 + 327712876087.

It is an arithmetic number, because the mean of its divisors is an integer number (327712876087).

Almost surely, 2^655425752173 is an apocalyptic number.

It is an amenable number.

655425752173 is a deficient number, since it is larger than the sum of its proper divisors (1).

655425752173 is an equidigital number, since it uses as much as digits as its factorization.

655425752173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820000, while the sum is 52.

The spelling of 655425752173 in words is "six hundred fifty-five billion, four hundred twenty-five million, seven hundred fifty-two thousand, one hundred seventy-three".