125405941 has 2 divisors, whose sum is σ = 125405942. Its totient is φ = 125405940.

The previous prime is 125405887. The next prime is 125405983. The reversal of 125405941 is 149504521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96943716 + 28462225 = 9846^2 + 5335^2 .

It is a cyclic number.

It is not a de Polignac number, because 125405941 - 2¹⁵ = 125373173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125405041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62702970 + 62702971.

It is an arithmetic number, because the mean of its divisors is an integer number (62702971).

Almost surely, 2^125405941 is an apocalyptic number.

It is an amenable number.

125405941 is a deficient number, since it is larger than the sum of its proper divisors (1).

125405941 is an equidigital number, since it uses as much as digits as its factorization.

125405941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 125405941 is about 11198.4794057050. The cubic root of 125405941 is about 500.5406698082.

It can be divided in two parts, 12540 and 5941, that added together give a palindrome (18481).

The spelling of 125405941 in words is "one hundred twenty-five million, four hundred five thousand, nine hundred forty-one".