9418890625 has 28 divisors (see below), whose sum is σ = 11804614524. Its totient is φ = 7515200000.

The previous prime is 9418890589. The next prime is 9418890641. The reversal of 9418890625 is 5260988149.

It can be written as a sum of positive squares in 14 ways, for example, as 7498347649 + 1920542976 = 86593^2 + 43824^2 .

It is not a de Polignac number, because 9418890625 - 2⁷ = 9418890497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9640137 + ... + 9641113.

Almost surely, 2^9418890625 is an apocalyptic number.

It is an amenable number.

9418890625 is a deficient number, since it is larger than the sum of its proper divisors (2385723899).

9418890625 is an frugal number, since it uses more digits than its factorization.

9418890625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 9418890625 is about 97050.9692120589. The cubic root of 9418890625 is about 2111.8671002979.

The spelling of 9418890625 in words is "nine billion, four hundred eighteen million, eight hundred ninety thousand, six hundred twenty-five".