6408499225 has 6 divisors (see below), whose sum is σ = 7946539070. Its totient is φ = 5126799360.

The previous prime is 6408499193. The next prime is 6408499259. The reversal of 6408499225 is 5229948046.

It can be written as a sum of positive squares in 3 ways, for example, as 5938969 + 6402560256 = 2437^2 + 80016^2 .

It is not a de Polignac number, because 6408499225 - 2⁵ = 6408499193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128169960 + ... + 128170009.

Almost surely, 2^6408499225 is an apocalyptic number.

It is an amenable number.

6408499225 is a deficient number, since it is larger than the sum of its proper divisors (1538039845).

6408499225 is a wasteful number, since it uses less digits than its factorization.

6408499225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256339979 (or 256339974 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 6408499225 is about 80053.1025320068. The cubic root of 6408499225 is about 1857.4570429767.

The spelling of 6408499225 in words is "six billion, four hundred eight million, four hundred ninety-nine thousand, two hundred twenty-five".