3643166425 has 6 divisors (see below), whose sum is σ = 4517526398. Its totient is φ = 2914533120.

The previous prime is 3643166389. The next prime is 3643166437. The reversal of 3643166425 is 5246613463.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 111598096 + 3531568329 = 10564^2 + 59427^2 .

It is not a de Polignac number, because 3643166425 - 2⁷ = 3643166297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 72863304 + ... + 72863353.

Almost surely, 2^3643166425 is an apocalyptic number.

It is an amenable number.

3643166425 is a deficient number, since it is larger than the sum of its proper divisors (874359973).

3643166425 is a wasteful number, since it uses less digits than its factorization.

3643166425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145726667 (or 145726662 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 3643166425 is about 60358.6483032879. The cubic root of 3643166425 is about 1538.7202536526.

Adding to 3643166425 its reverse (5246613463), we get a palindrome (8889779888).

The spelling of 3643166425 in words is "three billion, six hundred forty-three million, one hundred sixty-six thousand, four hundred twenty-five".