11897225 has 6 divisors (see below), whose sum is σ = 14752590. Its totient is φ = 9517760.

The previous prime is 11897219. The next prime is 11897227. The reversal of 11897225 is 52279811.

It can be written as a sum of positive squares in 3 ways, for example, as 499849 + 11397376 = 707^2 + 3376^2 .

It is not a de Polignac number, because 11897225 - 2⁴ = 11897209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11897227) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 237920 + ... + 237969.

It is an arithmetic number, because the mean of its divisors is an integer number (2458765).

Almost surely, 2^11897225 is an apocalyptic number.

It is an amenable number.

11897225 is a deficient number, since it is larger than the sum of its proper divisors (2855365).

11897225 is an equidigital number, since it uses as much as digits as its factorization.

11897225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475899 (or 475894 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 11897225 is about 3449.2354225248. The cubic root of 11897225 is about 228.2873736091.

The spelling of 11897225 in words is "eleven million, eight hundred ninety-seven thousand, two hundred twenty-five".