9902725589 has 2 divisors, whose sum is σ = 9902725590. Its totient is φ = 9902725588.

The previous prime is 9902725519. The next prime is 9902725627. The reversal of 9902725589 is 9855272099.

9902725589 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6879375364 + 3023350225 = 82942^2 + 54985^2 .

It is a cyclic number.

It is not a de Polignac number, because 9902725589 - 2³² = 5607758293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9902725519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4951362794 + 4951362795.

It is an arithmetic number, because the mean of its divisors is an integer number (4951362795).

Almost surely, 2^9902725589 is an apocalyptic number.

It is an amenable number.

9902725589 is a deficient number, since it is larger than the sum of its proper divisors (1).

9902725589 is an equidigital number, since it uses as much as digits as its factorization.

9902725589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 9902725589 is about 99512.4393681514. The cubic root of 9902725589 is about 2147.4262036048.

The spelling of 9902725589 in words is "nine billion, nine hundred two million, seven hundred twenty-five thousand, five hundred eighty-nine".