11521125 has 144 divisors (see below), whose sum is σ = 27743040. Its totient is φ = 4536000.

The previous prime is 11521051. The next prime is 11521187. The reversal of 11521125 is 52112511.

It is not a de Polignac number, because 11521125 - 2⁸ = 11520869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11521098 and 11521107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 606366 + ... + 606384.

It is an arithmetic number, because the mean of its divisors is an integer number (192660).

Almost surely, 2^11521125 is an apocalyptic number.

11521125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11521125 is an abundant number, since it is smaller than the sum of its proper divisors (16221915).

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

11521125 is a wasteful number, since it uses less digits than its factorization.

11521125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 45 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 11521125 is about 3394.2782738014. The cubic root of 11521125 is about 225.8559985361.

Adding to 11521125 its reverse (52112511), we get a palindrome (63633636).

It can be divided in two parts, 11 and 521125, that multiplied together give a palindrome (5732375).

The spelling of 11521125 in words is "eleven million, five hundred twenty-one thousand, one hundred twenty-five".