16825381481 has 8 divisors (see below), whose sum is σ = 16869833280. Its totient is φ = 16780988848.

The previous prime is 16825381451. The next prime is 16825381487. The reversal of 16825381481 is 18418352861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16825381481 - 2²² = 16821187177 is a prime.

It is a super-2 number, since 2×16825381481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16825381487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586490 + ... + 614508.

It is an arithmetic number, because the mean of its divisors is an integer number (2108729160).

Almost surely, 2^16825381481 is an apocalyptic number.

It is an amenable number.

16825381481 is a deficient number, since it is larger than the sum of its proper divisors (44451799).

16825381481 is an equidigital number, since it uses as much as digits as its factorization.

16825381481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29583.

The product of its digits is 368640, while the sum is 47.

The spelling of 16825381481 in words is "sixteen billion, eight hundred twenty-five million, three hundred eighty-one thousand, four hundred eighty-one".