16425081 has 12 divisors (see below), whose sum is σ = 23790052. Its totient is φ = 10920096.

The previous prime is 16425061. The next prime is 16425083. The reversal of 16425081 is 18052461.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 10949481 = 2340^2 + 3309^2 .

It is not a de Polignac number, because 16425081 - 2¹³ = 16416889 is a prime.

It is a super-2 number, since 2×16425081² = 539566571713122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16425083) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1275 + ... + 5871.

Almost surely, 2^16425081 is an apocalyptic number.

It is an amenable number.

16425081 is a deficient number, since it is larger than the sum of its proper divisors (7364971).

16425081 is a wasteful number, since it uses less digits than its factorization.

16425081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000 (or 4997 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 16425081 is about 4052.7868189679. The cubic root of 16425081 is about 254.1962698596.

The spelling of 16425081 in words is "sixteen million, four hundred twenty-five thousand, eighty-one".