16425739 has 4 divisors (see below), whose sum is σ = 17919000. Its totient is φ = 14932480.

The previous prime is 16425737. The next prime is 16425763. The reversal of 16425739 is 93752461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93752461 = 11 ⋅8522951.

It is a cyclic number.

It is not a de Polignac number, because 16425739 - 2¹ = 16425737 is a prime.

It is a super-2 number, since 2×16425739² = 539609803392242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16425698 and 16425707.

It is not an unprimeable number, because it can be changed into a prime (16425737) 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, 746614 + ... + 746635.

It is an arithmetic number, because the mean of its divisors is an integer number (4479750).

Almost surely, 2^16425739 is an apocalyptic number.

16425739 is a deficient number, since it is larger than the sum of its proper divisors (1493261).

16425739 is a wasteful number, since it uses less digits than its factorization.

16425739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493260.

The product of its digits is 45360, while the sum is 37.

The square root of 16425739 is about 4052.8679968635. The cubic root of 16425739 is about 254.1996642398.

It can be divided in two parts, 1642 and 5739, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 16425739 in words is "sixteen million, four hundred twenty-five thousand, seven hundred thirty-nine".