8383921725 has 12 divisors (see below), whose sum is σ = 13861417376. Its totient is φ = 4471424880.

The previous prime is 8383921709. The next prime is 8383921729. The reversal of 8383921725 is 5271293838.

It is a happy number.

It is not a de Polignac number, because 8383921725 - 2⁴ = 8383921709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8383921729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55892737 + ... + 55892886.

Almost surely, 2^8383921725 is an apocalyptic number.

It is an amenable number.

8383921725 is a deficient number, since it is larger than the sum of its proper divisors (5477495651).

8383921725 is a wasteful number, since it uses less digits than its factorization.

8383921725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111785636 (or 111785631 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 8383921725 is about 91563.7577046726. The cubic root of 8383921725 is about 2031.4949090420.

The spelling of 8383921725 in words is "eight billion, three hundred eighty-three million, nine hundred twenty-one thousand, seven hundred twenty-five".