16425564 has 12 divisors (see below), whose sum is σ = 38326344. Its totient is φ = 5475184.

The previous prime is 16425559. The next prime is 16425623. The reversal of 16425564 is 46552461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684387 + ... + 684410.

It is an arithmetic number, because the mean of its divisors is an integer number (3193862).

Almost surely, 2^16425564 is an apocalyptic number.

It is an amenable number.

16425564 is an abundant number, since it is smaller than the sum of its proper divisors (21900780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16425564 is a wasteful number, since it uses less digits than its factorization.

16425564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368804 (or 1368802 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 16425564 is about 4052.8464071563. The cubic root of 16425564 is about 254.1987614880.

The spelling of 16425564 in words is "sixteen million, four hundred twenty-five thousand, five hundred sixty-four".