11571225 has 48 divisors (see below), whose sum is σ = 20248704. Its totient is φ = 5824000.

The previous prime is 11571223. The next prime is 11571229. The reversal of 11571225 is 52217511.

It is not a de Polignac number, because 11571225 - 2¹ = 11571223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11571195 and 11571204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162940 + ... + 163010.

It is an arithmetic number, because the mean of its divisors is an integer number (421848).

Almost surely, 2^11571225 is an apocalyptic number.

11571225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11571225 is a deficient number, since it is larger than the sum of its proper divisors (8677479).

11571225 is a wasteful number, since it uses less digits than its factorization.

11571225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 173 counting only the distinct ones).

The product of its digits is 700, while the sum is 24.

The square root of 11571225 is about 3401.6503347640. The cubic root of 11571225 is about 226.1829059420.

Adding to 11571225 its reverse (52217511), we get a palindrome (63788736).

The spelling of 11571225 in words is "eleven million, five hundred seventy-one thousand, two hundred twenty-five".