425201993 has 2 divisors, whose sum is σ = 425201994. Its totient is φ = 425201992.

The previous prime is 425201971. The next prime is 425202023. The reversal of 425201993 is 399102524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383689744 + 41512249 = 19588^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 425201993 - 2⁸ = 425201737 is a prime.

It is not a weakly prime, because it can be changed into another prime (425201593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212600996 + 212600997.

It is an arithmetic number, because the mean of its divisors is an integer number (212600997).

Almost surely, 2^425201993 is an apocalyptic number.

It is an amenable number.

425201993 is a deficient number, since it is larger than the sum of its proper divisors (1).

425201993 is an equidigital number, since it uses as much as digits as its factorization.

425201993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 425201993 is about 20620.4265959752. The cubic root of 425201993 is about 751.9663913086.

The spelling of 425201993 in words is "four hundred twenty-five million, two hundred one thousand, nine hundred ninety-three".