27406625417 has 2 divisors, whose sum is σ = 27406625418. Its totient is φ = 27406625416.

The previous prime is 27406625377. The next prime is 27406625443. The reversal of 27406625417 is 71452660472.

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., 27107646736 + 298978681 = 164644^2 + 17291^2 .

It is a cyclic number.

It is not a de Polignac number, because 27406625417 - 2⁶ = 27406625353 is a prime.

It is a super-2 number, since 2×27406625417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27406625017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13703312708 + 13703312709.

It is an arithmetic number, because the mean of its divisors is an integer number (13703312709).

Almost surely, 2^27406625417 is an apocalyptic number.

It is an amenable number.

27406625417 is a deficient number, since it is larger than the sum of its proper divisors (1).

27406625417 is an equidigital number, since it uses as much as digits as its factorization.

27406625417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 27406625417 in words is "twenty-seven billion, four hundred six million, six hundred twenty-five thousand, four hundred seventeen".