16225517 has 12 divisors (see below), whose sum is σ = 20591136. Its totient is φ = 12642840.

The previous prime is 16225507. The next prime is 16225519. The reversal of 16225517 is 71552261.

It is not a de Polignac number, because 16225517 - 2⁶ = 16225453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16225517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16225519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14513 + ... + 15590.

It is an arithmetic number, because the mean of its divisors is an integer number (1715928).

Almost surely, 2^16225517 is an apocalyptic number.

It is an amenable number.

16225517 is a deficient number, since it is larger than the sum of its proper divisors (4365619).

16225517 is a wasteful number, since it uses less digits than its factorization.

16225517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30128 (or 30121 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 16225517 is about 4028.0909870558. The cubic root of 16225517 is about 253.1625809568.

Adding to 16225517 its reverse (71552261), we get a palindrome (87777778).

The spelling of 16225517 in words is "sixteen million, two hundred twenty-five thousand, five hundred seventeen".