3425729 has 2 divisors, whose sum is σ = 3425730. Its totient is φ = 3425728.

The previous prime is 3425693. The next prime is 3425731. The reversal of 3425729 is 9275243.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3323329 + 102400 = 1823^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 3425729 - 2⁸ = 3425473 is a prime.

Together with 3425731, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3425695 and 3425704.

It is not a weakly prime, because it can be changed into another prime (3425759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712864 + 1712865.

It is an arithmetic number, because the mean of its divisors is an integer number (1712865).

Almost surely, 2^3425729 is an apocalyptic number.

It is an amenable number.

3425729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3425729 is an equidigital number, since it uses as much as digits as its factorization.

3425729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 3425729 is about 1850.8724969592. The cubic root of 3425729 is about 150.7478064489.

The spelling of 3425729 in words is "three million, four hundred twenty-five thousand, seven hundred twenty-nine".