125172119 has 2 divisors, whose sum is σ = 125172120. Its totient is φ = 125172118.

The previous prime is 125172083. The next prime is 125172121. The reversal of 125172119 is 911271521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125172119 - 2¹² = 125168023 is a prime.

It is a super-2 number, since 2×125172119² = 31336118749900322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 125172121, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125172091 and 125172100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125172169) 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, 62586059 + 62586060.

It is an arithmetic number, because the mean of its divisors is an integer number (62586060).

Almost surely, 2^125172119 is an apocalyptic number.

125172119 is a deficient number, since it is larger than the sum of its proper divisors (1).

125172119 is an equidigital number, since it uses as much as digits as its factorization.

125172119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 29.

The square root of 125172119 is about 11188.0346352699. The cubic root of 125172119 is about 500.2293867473.

The spelling of 125172119 in words is "one hundred twenty-five million, one hundred seventy-two thousand, one hundred nineteen".