16425815857 has 16 divisors (see below), whose sum is σ = 18034410240. Its totient is φ = 14836729600.

The previous prime is 16425815851. The next prime is 16425815863. The reversal of 16425815857 is 75851852461.

It is a happy number.

16425815857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16425815851) and next prime (16425815863).

It is not a de Polignac number, because 16425815857 - 2¹¹ = 16425813809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16425815851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205193 + ... + 1218745.

It is an arithmetic number, because the mean of its divisors is an integer number (1127150640).

Almost surely, 2^16425815857 is an apocalyptic number.

It is an amenable number.

16425815857 is a deficient number, since it is larger than the sum of its proper divisors (1608594383).

16425815857 is a wasteful number, since it uses less digits than its factorization.

16425815857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14264.

The product of its digits is 2688000, while the sum is 52.

The spelling of 16425815857 in words is "sixteen billion, four hundred twenty-five million, eight hundred fifteen thousand, eight hundred fifty-seven".