125355949 has 2 divisors, whose sum is σ = 125355950. Its totient is φ = 125355948.

The previous prime is 125355941. The next prime is 125355953. The reversal of 125355949 is 949553521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67322025 + 58033924 = 8205^2 + 7618^2 .

It is a cyclic number.

It is not a de Polignac number, because 125355949 - 2³ = 125355941 is a prime.

It is a super-2 number, since 2×125355949² = 31428227899381202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125355941) 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, 62677974 + 62677975.

It is an arithmetic number, because the mean of its divisors is an integer number (62677975).

Almost surely, 2^125355949 is an apocalyptic number.

It is an amenable number.

125355949 is a deficient number, since it is larger than the sum of its proper divisors (1).

125355949 is an equidigital number, since it uses as much as digits as its factorization.

125355949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 43.

The square root of 125355949 is about 11196.2470944509. The cubic root of 125355949 is about 500.4741488902.

The spelling of 125355949 in words is "one hundred twenty-five million, three hundred fifty-five thousand, nine hundred forty-nine".