16407425 has 6 divisors (see below), whose sum is σ = 20345238. Its totient is φ = 13125920.

The previous prime is 16407403. The next prime is 16407437. The reversal of 16407425 is 52470461.

It can be written as a sum of positive squares in 3 ways, for example, as 399424 + 16008001 = 632^2 + 4001^2 .

It is not a de Polignac number, because 16407425 - 2⁶ = 16407361 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 328124 + ... + 328173.

It is an arithmetic number, because the mean of its divisors is an integer number (3390873).

Almost surely, 2^16407425 is an apocalyptic number.

It is an amenable number.

16407425 is a deficient number, since it is larger than the sum of its proper divisors (3937813).

16407425 is an equidigital number, since it uses as much as digits as its factorization.

16407425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656307 (or 656302 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 16407425 is about 4050.6079790570. The cubic root of 16407425 is about 254.1051551705.

Adding to 16407425 its reverse (52470461), we get a palindrome (68877886).

The spelling of 16407425 in words is "sixteen million, four hundred seven thousand, four hundred twenty-five".