11989125 has 24 divisors (see below), whose sum is σ = 21614424. Its totient is φ = 6393600.

The previous prime is 11989121. The next prime is 11989129. The reversal of 11989125 is 52198911.

11989125 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11989121) and next prime (11989129).

It can be written as a sum of positive squares in 4 ways, for example, as 2643876 + 9345249 = 1626^2 + 3057^2 .

It is not a de Polignac number, because 11989125 - 2² = 11989121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11989125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989121) 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, 4204 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (900601).

Almost surely, 2^11989125 is an apocalyptic number.

11989125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11989125 is a deficient number, since it is larger than the sum of its proper divisors (9625299).

11989125 is a wasteful number, since it uses less digits than its factorization.

11989125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10678 (or 10665 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 11989125 is about 3462.5315883036. The cubic root of 11989125 is about 228.8736677893.

The spelling of 11989125 in words is "eleven million, nine hundred eighty-nine thousand, one hundred twenty-five".