3825649 has 2 divisors, whose sum is σ = 3825650. Its totient is φ = 3825648.

The previous prime is 3825643. The next prime is 3825671. The reversal of 3825649 is 9465283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3732624 + 93025 = 1932^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3825649 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 8 + 2¹³ + 5⁹ + 6⁵ + 4⁹ + 9² .

It is not a weakly prime, because it can be changed into another prime (3825643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1912824 + 1912825.

It is an arithmetic number, because the mean of its divisors is an integer number (1912825).

Almost surely, 2^3825649 is an apocalyptic number.

It is an amenable number.

3825649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3825649 is an equidigital number, since it uses as much as digits as its factorization.

3825649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 3825649 is about 1955.9266346159. The cubic root of 3825649 is about 156.3993848132.

The spelling of 3825649 in words is "three million, eight hundred twenty-five thousand, six hundred forty-nine".