6470791956225 has 72 divisors (see below), whose sum is σ = 11712227687160. Its totient is φ = 3414683381760.

The previous prime is 6470791956217. The next prime is 6470791956259. The reversal of 6470791956225 is 5226591970746.

6470791956225 is a `hidden beast` number, since 6 + 47 + 0 + 7 + 9 + 1 + 9 + 562 + 25 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 4143357954576 + 2327434001649 = 2035524^2 + 1525593^2 .

It is not a de Polignac number, because 6470791956225 - 2³ = 6470791956217 is a prime.

It is a super-2 number, since 2×6470791956225² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

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 71 ways as a sum of consecutive naturals, for example, 95930811 + ... + 95998239.

Almost surely, 2^{6470791956225} is an apocalyptic number.

It is an amenable number.

6470791956225 is a deficient number, since it is larger than the sum of its proper divisors (5241435730935).

6470791956225 is a wasteful number, since it uses less digits than its factorization.

6470791956225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71939 (or 71931 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 63.

The spelling of 6470791956225 in words is "six trillion, four hundred seventy billion, seven hundred ninety-one million, nine hundred fifty-six thousand, two hundred twenty-five".