7825227217 has 2 divisors, whose sum is σ = 7825227218. Its totient is φ = 7825227216.

The previous prime is 7825227181. The next prime is 7825227251. The reversal of 7825227217 is 7127225287.

7825227217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6902951056 + 922276161 = 83084^2 + 30369^2 .

It is a cyclic number.

It is not a de Polignac number, because 7825227217 - 2¹⁹ = 7824702929 is a prime.

It is a super-2 number, since 2×7825227217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7825227017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912613608 + 3912613609.

It is an arithmetic number, because the mean of its divisors is an integer number (3912613609).

Almost surely, 2^7825227217 is an apocalyptic number.

It is an amenable number.

7825227217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7825227217 is an equidigital number, since it uses as much as digits as its factorization.

7825227217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 219520, while the sum is 43.

The square root of 7825227217 is about 88460.3143618651. The cubic root of 7825227217 is about 1985.3282342494.

The spelling of 7825227217 in words is "seven billion, eight hundred twenty-five million, two hundred twenty-seven thousand, two hundred seventeen".