199425658041 has 75 divisors (see below), whose sum is σ = 313865249401. Its totient is φ = 126190246896.

The previous prime is 199425658021. The next prime is 199425658049. The reversal of 199425658041 is 140856524991.

The square root of 199425658041 is 446571.

It is a perfect power (a square), and thus also a powerful number.

199425658041 is a `hidden beast` number, since 1 + 9 + 9 + 4 + 2 + 56 + 580 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 473976441 + 198951681600 = 21771^2 + 446040^2 .

It is not a de Polignac number, because 199425658041 - 2⁷ = 199425657913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199425658049) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 3380095870 + ... + 3380095928.

Almost surely, 2^199425658041 is an apocalyptic number.

199425658041 is the 446571-st square number.

199425658041 is the 223286-th centered octagonal number.

It is an amenable number.

199425658041 is a deficient number, since it is larger than the sum of its proper divisors (114439591360).

199425658041 is an frugal number, since it uses more digits than its factorization.

199425658041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 199425658041 in words is "one hundred ninety-nine billion, four hundred twenty-five million, six hundred fifty-eight thousand, forty-one".