16425234432 has 260 divisors, whose sum is σ = 50681452096. Its totient is φ = 5295144960.

The previous prime is 16425234409. The next prime is 16425234461. The reversal of 16425234432 is 23443252461.

16425234432 is a `hidden beast` number, since 1 + 64 + 2 + 523 + 44 + 32 = 666.

It is a super-2 number, since 2×16425234432² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10284258 + ... + 10285854.

Almost surely, 2^16425234432 is an apocalyptic number.

16425234432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16425234432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25340726048).

16425234432 is an abundant number, since it is smaller than the sum of its proper divisors (34256217664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16425234432 is an equidigital number, since it uses as much as digits as its factorization.

16425234432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1633 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 16425234432 its reverse (23443252461), we get a palindrome (39868486893).

The spelling of 16425234432 in words is "sixteen billion, four hundred twenty-five million, two hundred thirty-four thousand, four hundred thirty-two".