16425329 has 4 divisors (see below), whose sum is σ = 17289840. Its totient is φ = 15560820.

The previous prime is 16425317. The next prime is 16425337. The reversal of 16425329 is 92352461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16425329 - 2¹² = 16421233 is a prime.

It is a super-3 number, since 3×16425329³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16425295 and 16425304.

It is not an unprimeable number, because it can be changed into a prime (16425029) 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 3 ways as a sum of consecutive naturals, for example, 432227 + ... + 432264.

It is an arithmetic number, because the mean of its divisors is an integer number (4322460).

Almost surely, 2^16425329 is an apocalyptic number.

16425329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16425329 is a deficient number, since it is larger than the sum of its proper divisors (864511).

16425329 is an equidigital number, since it uses as much as digits as its factorization.

16425329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864510.

The product of its digits is 12960, while the sum is 32.

The square root of 16425329 is about 4052.8174150830. The cubic root of 16425329 is about 254.1975492111.

The spelling of 16425329 in words is "sixteen million, four hundred twenty-five thousand, three hundred twenty-nine".