9090909125 has 16 divisors (see below), whose sum is σ = 11736681840. Its totient is φ = 7021940800.

The previous prime is 9090909031. The next prime is 9090909127. The reversal of 9090909125 is 5219090909.

9090909125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 5773264324 + 3317644801 = 75982^2 + 57599^2 .

It is not a de Polignac number, because 9090909125 - 2²⁴ = 9074131909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090909127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1250294 + ... + 1257543.

It is an arithmetic number, because the mean of its divisors is an integer number (733542615).

Almost surely, 2^9090909125 is an apocalyptic number.

It is an amenable number.

9090909125 is a deficient number, since it is larger than the sum of its proper divisors (2645772715).

9090909125 is a wasteful number, since it uses less digits than its factorization.

9090909125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507881 (or 2507871 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 44.

The square root of 9090909125 is about 95346.2591033335. The cubic root of 9090909125 is about 2087.0640250321.

The spelling of 9090909125 in words is "nine billion, ninety million, nine hundred nine thousand, one hundred twenty-five".