6629921225 has 24 divisors (see below), whose sum is σ = 8293010880. Its totient is φ = 5257667520.

The previous prime is 6629921203. The next prime is 6629921231. The reversal of 6629921225 is 5221299266.

It is not a de Polignac number, because 6629921225 - 2¹⁰ = 6629920201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3359339 + ... + 3361311.

It is an arithmetic number, because the mean of its divisors is an integer number (345542120).

Almost surely, 2^6629921225 is an apocalyptic number.

It is an amenable number.

6629921225 is a deficient number, since it is larger than the sum of its proper divisors (1663089655).

6629921225 is a wasteful number, since it uses less digits than its factorization.

6629921225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089 (or 3084 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 6629921225 is about 81424.3282133786. The cubic root of 6629921225 is about 1878.6078067223.

The spelling of 6629921225 in words is "six billion, six hundred twenty-nine million, nine hundred twenty-one thousand, two hundred twenty-five".