16860225 has 24 divisors (see below), whose sum is σ = 28560672. Its totient is φ = 8771200.

The previous prime is 16860211. The next prime is 16860241. The reversal of 16860225 is 52206861.

It is not a de Polignac number, because 16860225 - 2¹⁸ = 16598081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16860192 and 16860201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334 + ... + 5816.

It is an arithmetic number, because the mean of its divisors is an integer number (1190028).

Almost surely, 2^16860225 is an apocalyptic number.

16860225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16860225 is a deficient number, since it is larger than the sum of its proper divisors (11700447).

16860225 is a wasteful number, since it uses less digits than its factorization.

16860225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5532 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 16860225 is about 4106.1204317458. The cubic root of 16860225 is about 256.4215111961.

The spelling of 16860225 in words is "sixteen million, eight hundred sixty thousand, two hundred twenty-five".