16239704425 has 24 divisors (see below), whose sum is σ = 23066041536. Its totient is φ = 11110607040.

The previous prime is 16239704419. The next prime is 16239704477. The reversal of 16239704425 is 52440793261.

It is not a de Polignac number, because 16239704425 - 2⁷ = 16239704297 is a prime.

It is a super-2 number, since 2×16239704425² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27214 + ... + 182263.

It is an arithmetic number, because the mean of its divisors is an integer number (961085064).

Almost surely, 2^16239704425 is an apocalyptic number.

It is an amenable number.

16239704425 is a deficient number, since it is larger than the sum of its proper divisors (6826337111).

16239704425 is a wasteful number, since it uses less digits than its factorization.

16239704425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209937 (or 209932 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 16239704425 in words is "sixteen billion, two hundred thirty-nine million, seven hundred four thousand, four hundred twenty-five".