125842901 has 2 divisors, whose sum is σ = 125842902. Its totient is φ = 125842900.

The previous prime is 125842889. The next prime is 125842933. The reversal of 125842901 is 109248521.

It is an a-pointer prime, because the next prime (125842933) can be obtained adding 125842901 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114276100 + 11566801 = 10690^2 + 3401^2 .

It is an emirp because it is prime and its reverse (109248521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125842901 - 2⁶ = 125842837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125842961) 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, 62921450 + 62921451.

It is an arithmetic number, because the mean of its divisors is an integer number (62921451).

Almost surely, 2^125842901 is an apocalyptic number.

It is an amenable number.

125842901 is a deficient number, since it is larger than the sum of its proper divisors (1).

125842901 is an equidigital number, since it uses as much as digits as its factorization.

125842901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 125842901 is about 11217.9722320926. The cubic root of 125842901 is about 501.1213512627.

The spelling of 125842901 in words is "one hundred twenty-five million, eight hundred forty-two thousand, nine hundred one".