3825666398 has 16 divisors (see below), whose sum is σ = 5907998976. Its totient is φ = 1856879640.

The previous prime is 3825666391. The next prime is 3825666407. The reversal of 3825666398 is 8936665283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3825666391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122438 + ... + 150473.

It is an arithmetic number, because the mean of its divisors is an integer number (369249936).

Almost surely, 2^3825666398 is an apocalyptic number.

3825666398 is a deficient number, since it is larger than the sum of its proper divisors (2082332578).

3825666398 is a wasteful number, since it uses less digits than its factorization.

3825666398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273119.

The product of its digits is 11197440, while the sum is 56.

The square root of 3825666398 is about 61851.9716581452. The cubic root of 3825666398 is about 1563.9962190000.

The spelling of 3825666398 in words is "three billion, eight hundred twenty-five million, six hundred sixty-six thousand, three hundred ninety-eight".