125804837 has 2 divisors, whose sum is σ = 125804838. Its totient is φ = 125804836.

The previous prime is 125804807. The next prime is 125804839. The reversal of 125804837 is 738408521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123632161 + 2172676 = 11119^2 + 1474^2 .

It is an emirp because it is prime and its reverse (738408521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125804837 - 2¹⁸ = 125542693 is a prime.

Together with 125804839, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125804837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125804839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62902418 + 62902419.

It is an arithmetic number, because the mean of its divisors is an integer number (62902419).

Almost surely, 2^125804837 is an apocalyptic number.

It is an amenable number.

125804837 is a deficient number, since it is larger than the sum of its proper divisors (1).

125804837 is an equidigital number, since it uses as much as digits as its factorization.

125804837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 125804837 is about 11216.2755404813. The cubic root of 125804837 is about 501.0708210474.

The spelling of 125804837 in words is "one hundred twenty-five million, eight hundred four thousand, eight hundred thirty-seven".