6491069225 has 12 divisors (see below), whose sum is σ = 8049944220. Its totient is φ = 5192198400.

The previous prime is 6491069209. The next prime is 6491069243. The reversal of 6491069225 is 5229601946.

It can be written as a sum of positive squares in 6 ways, for example, as 1993086736 + 4497982489 = 44644^2 + 67067^2 .

It is not a de Polignac number, because 6491069225 - 2⁴ = 6491069209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321221 + ... + 340829.

It is an arithmetic number, because the mean of its divisors is an integer number (670828685).

Almost surely, 2^6491069225 is an apocalyptic number.

It is an amenable number.

6491069225 is a deficient number, since it is larger than the sum of its proper divisors (1558874995).

6491069225 is a wasteful number, since it uses less digits than its factorization.

6491069225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32860 (or 32855 counting only the distinct ones).

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

The square root of 6491069225 is about 80567.1721298445. The cubic root of 6491069225 is about 1865.4004631348.

The spelling of 6491069225 in words is "six billion, four hundred ninety-one million, sixty-nine thousand, two hundred twenty-five".