6909196246225 has 243 divisors, whose sum is σ = 11101058473113. Its totient is φ = 4251413537280.

The previous prime is 6909196246219. The next prime is 6909196246241. The reversal of 6909196246225 is 5226426919096.

The square root of 6909196246225 is 2628535.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 40 ways, for example, as 6838648636561 + 70547609664 = 2615081^2 + 265608^2 .

It is not a de Polignac number, because 6909196246225 - 2⁷ = 6909196246097 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 242 ways as a sum of consecutive naturals, for example, 63387121471 + ... + 63387121579.

Almost surely, 2^{6909196246225} is an apocalyptic number.

6909196246225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6909196246225 is the 2628535-th square number.

6909196246225 is the 1314268-th centered octagonal number.

It is an amenable number.

6909196246225 is a deficient number, since it is larger than the sum of its proper divisors (4191862226888).

6909196246225 is a wasteful number, since it uses less digits than its factorization.

6909196246225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 6909196246225 in words is "six trillion, nine hundred nine billion, one hundred ninety-six million, two hundred forty-six thousand, two hundred twenty-five".