27250215173 has 2 divisors, whose sum is σ = 27250215174. Its totient is φ = 27250215172.

The previous prime is 27250215101. The next prime is 27250215199. The reversal of 27250215173 is 37151205272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19807184644 + 7443030529 = 140738^2 + 86273^2 .

It is a cyclic number.

It is not a de Polignac number, because 27250215173 - 2⁸ = 27250214917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27250215073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13625107586 + 13625107587.

It is an arithmetic number, because the mean of its divisors is an integer number (13625107587).

Almost surely, 2^27250215173 is an apocalyptic number.

It is an amenable number.

27250215173 is a deficient number, since it is larger than the sum of its proper divisors (1).

27250215173 is an equidigital number, since it uses as much as digits as its factorization.

27250215173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 35.

Subtracting 27250215173 from its reverse (37151205272), we obtain a palindrome (9900990099).

The spelling of 27250215173 in words is "twenty-seven billion, two hundred fifty million, two hundred fifteen thousand, one hundred seventy-three".