6625160421 has 8 divisors (see below), whose sum is σ = 9636597024. Its totient is φ = 4015248720.

The previous prime is 6625160387. The next prime is 6625160441. The reversal of 6625160421 is 1240615266.

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

It is not a de Polignac number, because 6625160421 - 2¹⁴ = 6625144037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 200762437 = 6625160421 / (6 + 6 + 2 + 5 + 1 + 6 + 0 + 4 + 2 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625160441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100381186 + ... + 100381251.

It is an arithmetic number, because the mean of its divisors is an integer number (1204574628).

Almost surely, 2^6625160421 is an apocalyptic number.

It is an amenable number.

6625160421 is a deficient number, since it is larger than the sum of its proper divisors (3011436603).

6625160421 is a wasteful number, since it uses less digits than its factorization.

6625160421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200762451.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 6625160421 is about 81395.0884329024. The cubic root of 6625160421 is about 1878.1580364125.

Adding to 6625160421 its reverse (1240615266), we get a palindrome (7865775687).

The spelling of 6625160421 in words is "six billion, six hundred twenty-five million, one hundred sixty thousand, four hundred twenty-one".