16425616 has 20 divisors (see below), whose sum is σ = 32136832. Its totient is φ = 8132256.

The previous prime is 16425559. The next prime is 16425623. The reversal of 16425616 is 61652461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336 + ... + 6631.

Almost surely, 2^16425616 is an apocalyptic number.

16425616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16425616 is a deficient number, since it is larger than the sum of its proper divisors (15711216).

16425616 is a wasteful number, since it uses less digits than its factorization.

16425616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078 (or 10072 counting only the distinct ones).

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

The square root of 16425616 is about 4052.8528223956. The cubic root of 16425616 is about 254.1990297349.

It can be divided in two parts, 164 and 25616, that multiplied together give a palindrome (4201024).

The spelling of 16425616 in words is "sixteen million, four hundred twenty-five thousand, six hundred sixteen".