7125197 has 2 divisors, whose sum is σ = 7125198. Its totient is φ = 7125196.

The previous prime is 7125187. The next prime is 7125199. The reversal of 7125197 is 7915217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5148361 + 1976836 = 2269^2 + 1406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7125197 is a prime.

Together with 7125199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7125199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3562598 + 3562599.

It is an arithmetic number, because the mean of its divisors is an integer number (3562599).

Almost surely, 2^7125197 is an apocalyptic number.

It is an amenable number.

7125197 is a deficient number, since it is larger than the sum of its proper divisors (1).

7125197 is an equidigital number, since it uses as much as digits as its factorization.

7125197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4410, while the sum is 32.

The square root of 7125197 is about 2669.3064642337. The cubic root of 7125197 is about 192.4268300088.

The spelling of 7125197 in words is "seven million, one hundred twenty-five thousand, one hundred ninety-seven".