125641 has 2 divisors, whose sum is σ = 125642.
Its totient is φ = 125640.
The previous prime is 125639. The next prime is 125651. The reversal of 125641 is 146521.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 87616 + 38025 = 296^2 + 195^2
It is an emirp because it is prime and its reverse (146521) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 125641 - 21 = 125639 is a prime.
Together with 125639, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (125621) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62820 + 62821.
It is an arithmetic number, because the mean of its divisors is an integer number (62821).
2125641 is an apocalyptic number.
It is an amenable number.
125641 is a deficient number, since it is larger than the sum of its proper divisors (1).
125641 is an equidigital number, since it uses as much as digits as its factorization.
125641 is an evil number, because the sum of its binary digits is even.
The product of its digits is 240, while the sum is 19.
The square root of 125641 is about 354.4587423100.
The cubic root of 125641 is about 50.0853209904.
The spelling of 125641 in words is "one hundred twenty-five thousand, six hundred forty-one".