9125445720 has 128 divisors (see below), whose sum is σ = 27781871040. Its totient is φ = 2397634560.

The previous prime is 9125445701. The next prime is 9125445751. The reversal of 9125445720 is 275445219.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2803614 + ... + 2806866.

Almost surely, 2^9125445720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9125445720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13890935520).

9125445720 is an abundant number, since it is smaller than the sum of its proper divisors (18656425320).

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

9125445720 is a wasteful number, since it uses less digits than its factorization.

9125445720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605 (or 3601 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 9125445720 is about 95527.1988493330. The cubic root of 9125445720 is about 2089.7036216561.

The spelling of 9125445720 in words is "nine billion, one hundred twenty-five million, four hundred forty-five thousand, seven hundred twenty".