9911025 has 24 divisors (see below), whose sum is σ = 18208160. Its totient is φ = 5285520.

The previous prime is 9911023. The next prime is 9911063. The reversal of 9911025 is 5201199.

It is a happy number.

It is not a de Polignac number, because 9911025 - 2¹ = 9911023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 9911025.

It is not an unprimeable number, because it can be changed into a prime (9911023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6667 + ... + 8016.

Almost surely, 2^9911025 is an apocalyptic number.

It is an amenable number.

9911025 is a deficient number, since it is larger than the sum of its proper divisors (8297135).

9911025 is a wasteful number, since it uses less digits than its factorization.

9911025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14702 (or 14691 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 9911025 is about 3148.1780445204. The cubic root of 9911025 is about 214.8025950812.

It can be divided in two parts, 991 and 1025, that added together give a triangular number (2016 = T₆₃).

The spelling of 9911025 in words is "nine million, nine hundred eleven thousand, twenty-five".