16252460421 has 8 divisors (see below), whose sum is σ = 21672837504. Its totient is φ = 10833528480.

The previous prime is 16252460381. The next prime is 16252460423. The reversal of 16252460421 is 12406425261.

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

It is not a de Polignac number, because 16252460421 - 2¹⁰ = 16252459397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16252460423) 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, 334765 + ... + 380226.

It is an arithmetic number, because the mean of its divisors is an integer number (2709104688).

Almost surely, 2^16252460421 is an apocalyptic number.

It is an amenable number.

16252460421 is a deficient number, since it is larger than the sum of its proper divisors (5420377083).

16252460421 is an equidigital number, since it uses as much as digits as its factorization.

16252460421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722571.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 16252460421 its reverse (12406425261), we get a palindrome (28658885682).

The spelling of 16252460421 in words is "sixteen billion, two hundred fifty-two million, four hundred sixty thousand, four hundred twenty-one".