125897 has 2 divisors, whose sum is σ = 125898.
Its totient is φ = 125896.
The previous prime is 125887. The next prime is 125899. The reversal of 125897 is 798521.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 121801 + 4096 = 349^2 + 64^2
It is an emirp because it is prime and its reverse (798521) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 125897 - 28 = 125641 is a prime.
Together with 125899, it forms a pair of twin primes.
It is a Chen prime.
It is a nialpdrome in base 11.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125897.
It is not a weakly prime, because it can be changed into another prime (125899) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62948 + 62949.
It is an arithmetic number, because the mean of its divisors is an integer number (62949).
2125897 is an apocalyptic number.
It is an amenable number.
125897 is a deficient number, since it is larger than the sum of its proper divisors (1).
125897 is an equidigital number, since it uses as much as digits as its factorization.
125897 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 5040, while the sum is 32.
The square root of 125897 is about 354.8196725099.
The cubic root of 125897 is about 50.1193150519.
The spelling of 125897 in words is "one hundred twenty-five thousand, eight hundred ninety-seven".