3425140021 has 2 divisors, whose sum is σ = 3425140022. Its totient is φ = 3425140020.

The previous prime is 3425139989. The next prime is 3425140067. The reversal of 3425140021 is 1200415243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3283863025 + 141276996 = 57305^2 + 11886^2 .

It is a cyclic number.

It is not a de Polignac number, because 3425140021 - 2⁵ = 3425139989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3425139974 and 3425140001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3425140421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712570010 + 1712570011.

It is an arithmetic number, because the mean of its divisors is an integer number (1712570011).

Almost surely, 2^3425140021 is an apocalyptic number.

It is an amenable number.

3425140021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3425140021 is an equidigital number, since it uses as much as digits as its factorization.

3425140021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 3425140021 is about 58524.6958215077. The cubic root of 3425140021 is about 1507.3916669353.

Adding to 3425140021 its reverse (1200415243), we get a palindrome (4625555264).

The spelling of 3425140021 in words is "three billion, four hundred twenty-five million, one hundred forty thousand, twenty-one".