9945934925 has 24 divisors (see below), whose sum is σ = 12469993536. Its totient is φ = 7868557440.

The previous prime is 9945934871. The next prime is 9945934927. The reversal of 9945934925 is 5294395499.

It is not a de Polignac number, because 9945934925 - 2²² = 9941740621 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 (9945934927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2204522 + ... + 2209028.

It is an arithmetic number, because the mean of its divisors is an integer number (519583064).

Almost surely, 2^9945934925 is an apocalyptic number.

It is an amenable number.

9945934925 is a deficient number, since it is larger than the sum of its proper divisors (2524058611).

9945934925 is a wasteful number, since it uses less digits than its factorization.

9945934925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477 (or 5472 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 59.

The square root of 9945934925 is about 99729.3082548957. The cubic root of 9945934925 is about 2150.5450159664.

The spelling of 9945934925 in words is "nine billion, nine hundred forty-five million, nine hundred thirty-four thousand, nine hundred twenty-five".