16825398523 has 4 divisors (see below), whose sum is σ = 16895797920. Its totient is φ = 16754999128.

The previous prime is 16825398481. The next prime is 16825398533. The reversal of 16825398523 is 32589352861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16825398523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16825398533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35199340 + ... + 35199817.

It is an arithmetic number, because the mean of its divisors is an integer number (4223949480).

Almost surely, 2^16825398523 is an apocalyptic number.

16825398523 is a deficient number, since it is larger than the sum of its proper divisors (70399397).

16825398523 is an equidigital number, since it uses as much as digits as its factorization.

16825398523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70399396.

The product of its digits is 3110400, while the sum is 52.

The spelling of 16825398523 in words is "sixteen billion, eight hundred twenty-five million, three hundred ninety-eight thousand, five hundred twenty-three".