125671099 has 2 divisors, whose sum is σ = 125671100. Its totient is φ = 125671098.

The previous prime is 125671097. The next prime is 125671127. The reversal of 125671099 is 990176521.

It is a weak prime.

It is an emirp because it is prime and its reverse (990176521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125671099 - 2¹ = 125671097 is a prime.

Together with 125671097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125671097) 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, 62835549 + 62835550.

It is an arithmetic number, because the mean of its divisors is an integer number (62835550).

Almost surely, 2^125671099 is an apocalyptic number.

125671099 is a deficient number, since it is larger than the sum of its proper divisors (1).

125671099 is an equidigital number, since it uses as much as digits as its factorization.

125671099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 125671099 is about 11210.3121722814. The cubic root of 125671099 is about 500.8932020966.

The spelling of 125671099 in words is "one hundred twenty-five million, six hundred seventy-one thousand, ninety-nine".