43625388658081 has 2 divisors, whose sum is σ = 43625388658082. Its totient is φ = 43625388658080.

The previous prime is 43625388658037. The next prime is 43625388658091. The reversal of 43625388658081 is 18085688352634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24056974753681 + 19568413904400 = 4904791^2 + 4423620^2 .

It is a cyclic number.

It is not a de Polignac number, because 43625388658081 - 2²⁹ = 43624851787169 is a prime.

It is a super-2 number, since 2×43625388658081² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43625388657998 and 43625388658016.

It is not a weakly prime, because it can be changed into another prime (43625388658021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21812694329040 + 21812694329041.

It is an arithmetic number, because the mean of its divisors is an integer number (21812694329041).

Almost surely, 2^{43625388658081} is an apocalyptic number.

It is an amenable number.

43625388658081 is a deficient number, since it is larger than the sum of its proper divisors (1).

43625388658081 is an equidigital number, since it uses as much as digits as its factorization.

43625388658081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 265420800, while the sum is 67.

The spelling of 43625388658081 in words is "forty-three trillion, six hundred twenty-five billion, three hundred eighty-eight million, six hundred fifty-eight thousand, eighty-one".