994125571 has 2 divisors, whose sum is σ = 994125572. Its totient is φ = 994125570.

The previous prime is 994125569. The next prime is 994125593. The reversal of 994125571 is 175521499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 994125571 - 2¹ = 994125569 is a prime.

Together with 994125569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (994125511) 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, 497062785 + 497062786.

It is an arithmetic number, because the mean of its divisors is an integer number (497062786).

Almost surely, 2^994125571 is an apocalyptic number.

994125571 is a deficient number, since it is larger than the sum of its proper divisors (1).

994125571 is an equidigital number, since it uses as much as digits as its factorization.

994125571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 43.

The square root of 994125571 is about 31529.7569131130. The cubic root of 994125571 is about 998.0380101132.

The spelling of 994125571 in words is "nine hundred ninety-four million, one hundred twenty-five thousand, five hundred seventy-one".