16217335425 has 48 divisors (see below), whose sum is σ = 27471491712. Its totient is φ = 8439244800.

The previous prime is 16217335391. The next prime is 16217335451. The reversal of 16217335425 is 52453371261.

It is not a de Polignac number, because 16217335425 - 2¹² = 16217331329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 500827 + ... + 532223.

It is an arithmetic number, because the mean of its divisors is an integer number (572322744).

Almost surely, 2^16217335425 is an apocalyptic number.

16217335425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16217335425 is a deficient number, since it is larger than the sum of its proper divisors (11254156287).

16217335425 is a wasteful number, since it uses less digits than its factorization.

16217335425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31578 (or 31573 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The spelling of 16217335425 in words is "sixteen billion, two hundred seventeen million, three hundred thirty-five thousand, four hundred twenty-five".