11405625 has 80 divisors (see below), whose sum is σ = 23992320. Its totient is φ = 4680000.

The previous prime is 11405609. The next prime is 11405633. The reversal of 11405625 is 52650411.

It is not a de Polignac number, because 11405625 - 2⁴ = 11405609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11405595 and 11405604.

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 79 ways as a sum of consecutive naturals, for example, 144336 + ... + 144414.

It is an arithmetic number, because the mean of its divisors is an integer number (299904).

Almost surely, 2^11405625 is an apocalyptic number.

11405625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11405625 is an abundant number, since it is smaller than the sum of its proper divisors (12586695).

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

11405625 is an equidigital number, since it uses as much as digits as its factorization.

11405625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 11405625 is about 3377.2214911077. The cubic root of 11405625 is about 225.0987221100.

The spelling of 11405625 in words is "eleven million, four hundred five thousand, six hundred twenty-five".