125110019 has 2 divisors, whose sum is σ = 125110020. Its totient is φ = 125110018.

The previous prime is 125109979. The next prime is 125110057. The reversal of 125110019 is 910011521.

It is a strong prime.

It is an emirp because it is prime and its reverse (910011521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125110019 is a prime.

It is a super-2 number, since 2×125110019² = 31305033708360722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125110319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62555009 + 62555010.

It is an arithmetic number, because the mean of its divisors is an integer number (62555010).

Almost surely, 2^125110019 is an apocalyptic number.

125110019 is a deficient number, since it is larger than the sum of its proper divisors (1).

125110019 is an equidigital number, since it uses as much as digits as its factorization.

125110019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 125110019 is about 11185.2590046007. The cubic root of 125110019 is about 500.1466489839.

The spelling of 125110019 in words is "one hundred twenty-five million, one hundred ten thousand, nineteen".