11503125 has 36 divisors (see below), whose sum is σ = 20818980. Its totient is φ = 6120000.

The previous prime is 11503103. The next prime is 11503153. The reversal of 11503125 is 52130511.

11503125 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 6 ways, for example, as 7017201 + 4485924 = 2649^2 + 2118^2 .

It is not a de Polignac number, because 11503125 - 2⁹ = 11502613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11503098 and 11503107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27921 + ... + 28329.

It is an arithmetic number, because the mean of its divisors is an integer number (578305).

Almost surely, 2^11503125 is an apocalyptic number.

11503125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11503125 is a deficient number, since it is larger than the sum of its proper divisors (9315855).

11503125 is an frugal number, since it uses more digits than its factorization.

11503125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 11503125 is about 3391.6257163785. The cubic root of 11503125 is about 225.7383153814.

Adding to 11503125 its reverse (52130511), we get a palindrome (63633636).

It can be divided in two parts, 11503 and 125, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 11503125 in words is "eleven million, five hundred three thousand, one hundred twenty-five".