125303621 has 2 divisors, whose sum is σ = 125303622. Its totient is φ = 125303620.

The previous prime is 125303597. The next prime is 125303641. The reversal of 125303621 is 126303521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110481121 + 14822500 = 10511^2 + 3850^2 .

It is a cyclic number.

It is not a de Polignac number, because 125303621 - 2⁶ = 125303557 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 (125303641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62651810 + 62651811.

It is an arithmetic number, because the mean of its divisors is an integer number (62651811).

Almost surely, 2^125303621 is an apocalyptic number.

It is an amenable number.

125303621 is a deficient number, since it is larger than the sum of its proper divisors (1).

125303621 is an equidigital number, since it uses as much as digits as its factorization.

125303621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 125303621 is about 11193.9099960648. The cubic root of 125303621 is about 500.4045006702.

The spelling of 125303621 in words is "one hundred twenty-five million, three hundred three thousand, six hundred twenty-one".