13785225 has 24 divisors (see below), whose sum is σ = 23352672. Its totient is φ = 7171200.

The previous prime is 13785217. The next prime is 13785227. The reversal of 13785225 is 52258731.

It is not a de Polignac number, because 13785225 - 2³ = 13785217 is a prime.

It is a super-4 number, since 4×13785225⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (13785227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 834 + ... + 5316.

It is an arithmetic number, because the mean of its divisors is an integer number (973028).

Almost surely, 2^13785225 is an apocalyptic number.

13785225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13785225 is a deficient number, since it is larger than the sum of its proper divisors (9567447).

13785225 is a wasteful number, since it uses less digits than its factorization.

13785225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537 (or 4532 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 13785225 is about 3712.8459434779. The cubic root of 13785225 is about 239.7753975116.

The spelling of 13785225 in words is "thirteen million, seven hundred eighty-five thousand, two hundred twenty-five".