125621941 has 2 divisors, whose sum is σ = 125621942. Its totient is φ = 125621940.

The previous prime is 125621869. The next prime is 125621971. The reversal of 125621941 is 149126521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123876900 + 1745041 = 11130^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 125621941 - 2⁹ = 125621429 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 (125621971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62810970 + 62810971.

It is an arithmetic number, because the mean of its divisors is an integer number (62810971).

Almost surely, 2^125621941 is an apocalyptic number.

It is an amenable number.

125621941 is a deficient number, since it is larger than the sum of its proper divisors (1).

125621941 is an equidigital number, since it uses as much as digits as its factorization.

125621941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 125621941 is about 11208.1194229897. The cubic root of 125621941 is about 500.8278831292.

The spelling of 125621941 in words is "one hundred twenty-five million, six hundred twenty-one thousand, nine hundred forty-one".