9925749480 has 64 divisors (see below), whose sum is σ = 30004603200. Its totient is φ = 2626657280.

The previous prime is 9925749461. The next prime is 9925749481. The reversal of 9925749480 is 849475299.

It is a self number, because there is not a number n which added to its sum of digits gives 9925749480.

It is not an unprimeable number, because it can be changed into a prime (9925749481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299985 + ... + 331424.

It is an arithmetic number, because the mean of its divisors is an integer number (468821925).

Almost surely, 2^9925749480 is an apocalyptic number.

It is an amenable number.

9925749480 is an abundant number, since it is smaller than the sum of its proper divisors (20078853720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9925749480 is a wasteful number, since it uses less digits than its factorization.

9925749480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631554 (or 631550 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The square root of 9925749480 is about 99628.0556871407. The cubic root of 9925749480 is about 2149.0891746759.

The spelling of 9925749480 in words is "nine billion, nine hundred twenty-five million, seven hundred forty-nine thousand, four hundred eighty".