16425139 has 12 divisors (see below), whose sum is σ = 17501616. Its totient is φ = 15411888.

The previous prime is 16425113. The next prime is 16425163. The reversal of 16425139 is 93152461.

It is not a de Polignac number, because 16425139 - 2⁹ = 16424627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16425139.

It is not an unprimeable number, because it can be changed into a prime (16425109) 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, 62322 + ... + 62584.

It is an arithmetic number, because the mean of its divisors is an integer number (1458468).

Almost surely, 2^16425139 is an apocalyptic number.

16425139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16425139 is a deficient number, since it is larger than the sum of its proper divisors (1076477).

16425139 is a wasteful number, since it uses less digits than its factorization.

16425139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 455 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 16425139 is about 4052.7939745316. The cubic root of 16425139 is about 254.1965690639.

The spelling of 16425139 in words is "sixteen million, four hundred twenty-five thousand, one hundred thirty-nine".