16449025 has 12 divisors (see below), whose sum is σ = 21284352. Its totient is φ = 12586640.

The previous prime is 16449019. The next prime is 16449031. The reversal of 16449025 is 52094461.

It is an interprime number because it is at equal distance from previous prime (16449019) and next prime (16449031).

It is not a de Polignac number, because 16449025 - 2⁹ = 16448513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13729 + ... + 14878.

It is an arithmetic number, because the mean of its divisors is an integer number (1773696).

Almost surely, 2^16449025 is an apocalyptic number.

It is an amenable number.

16449025 is a deficient number, since it is larger than the sum of its proper divisors (4835327).

16449025 is a wasteful number, since it uses less digits than its factorization.

16449025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28640 (or 28635 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 16449025 is about 4055.7397598958. The cubic root of 16449025 is about 254.3197298356.

The spelling of 16449025 in words is "sixteen million, four hundred forty-nine thousand, twenty-five".