11391025 has 12 divisors (see below), whose sum is σ = 14393052. Its totient is φ = 8939840.

The previous prime is 11391019. The next prime is 11391031. The reversal of 11391025 is 52019311.

It is an interprime number because it is at equal distance from previous prime (11391019) and next prime (11391031).

It can be written as a sum of positive squares in 6 ways, for example, as 74529 + 11316496 = 273^2 + 3364^2 .

It is not a de Polignac number, because 11391025 - 2²¹ = 9293873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11390987 and 11391005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2974 + ... + 5623.

It is an arithmetic number, because the mean of its divisors is an integer number (1199421).

Almost surely, 2^11391025 is an apocalyptic number.

It is an amenable number.

11391025 is a deficient number, since it is larger than the sum of its proper divisors (3002027).

11391025 is an equidigital number, since it uses as much as digits as its factorization.

11391025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660 (or 8655 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 11391025 is about 3375.0592587390. The cubic root of 11391025 is about 225.0026337140.

The spelling of 11391025 in words is "eleven million, three hundred ninety-one thousand, twenty-five".