9211135725 has 120 divisors (see below), whose sum is σ = 18921244320. Its totient is φ = 4392144000.

The previous prime is 9211135709. The next prime is 9211135733. The reversal of 9211135725 is 5275311129.

9211135725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9211135725 - 2⁴ = 9211135709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9211135725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1355386 + ... + 1362164.

It is an arithmetic number, because the mean of its divisors is an integer number (157677036).

Almost surely, 2^9211135725 is an apocalyptic number.

It is an amenable number.

9211135725 is an abundant number, since it is smaller than the sum of its proper divisors (9710108595).

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

9211135725 is a wasteful number, since it uses less digits than its factorization.

9211135725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873 (or 6859 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 9211135725 is about 95974.6618905219. The cubic root of 9211135725 is about 2096.2241845125.

The spelling of 9211135725 in words is "nine billion, two hundred eleven million, one hundred thirty-five thousand, seven hundred twenty-five".