3425638121 has 2 divisors, whose sum is σ = 3425638122. Its totient is φ = 3425638120.

The previous prime is 3425638049. The next prime is 3425638127. The reversal of 3425638121 is 1218365243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3036010000 + 389628121 = 55100^2 + 19739^2 .

It is an emirp because it is prime and its reverse (1218365243) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3425638121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3425638127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712819060 + 1712819061.

It is an arithmetic number, because the mean of its divisors is an integer number (1712819061).

Almost surely, 2^3425638121 is an apocalyptic number.

It is an amenable number.

3425638121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3425638121 is an equidigital number, since it uses as much as digits as its factorization.

3425638121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 3425638121 is about 58528.9511353142. The cubic root of 3425638121 is about 1507.4647340596.

The spelling of 3425638121 in words is "three billion, four hundred twenty-five million, six hundred thirty-eight thousand, one hundred twenty-one".