125001994 has 16 divisors (see below), whose sum is σ = 202383720. Its totient is φ = 57562560.

The previous prime is 125001991. The next prime is 125001997. The reversal of 125001994 is 499100521.

It is an interprime number because it is at equal distance from previous prime (125001991) and next prime (125001997).

It can be written as a sum of positive squares in 4 ways, for example, as 111408025 + 13593969 = 10555^2 + 3687^2 .

It is not an unprimeable number, because it can be changed into a prime (125001991) 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 in 7 ways as a sum of consecutive naturals, for example, 6772 + ... + 17200.

Almost surely, 2^125001994 is an apocalyptic number.

125001994 is a deficient number, since it is larger than the sum of its proper divisors (77381726).

125001994 is a wasteful number, since it uses less digits than its factorization.

125001994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 125001994 is about 11180.4290615343. The cubic root of 125001994 is about 500.0026586525.

The spelling of 125001994 in words is "one hundred twenty-five million, one thousand, nine hundred ninety-four".