6397809266025 has 36 divisors (see below), whose sum is σ = 12062302390320. Its totient is φ = 3232577311200.

The previous prime is 6397809265963. The next prime is 6397809266111. The reversal of 6397809266025 is 5206629087936.

6397809266025 is a `hidden beast` number, since 6 + 397 + 80 + 92 + 6 + 60 + 25 = 666.

It is not a de Polignac number, because 6397809266025 - 2¹² = 6397809261929 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 748277511 + ... + 748286060.

Almost surely, 2^{6397809266025} is an apocalyptic number.

It is an amenable number.

6397809266025 is a deficient number, since it is larger than the sum of its proper divisors (5664493124295).

6397809266025 is a wasteful number, since it uses less digits than its factorization.

6397809266025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496563606 (or 1496563598 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 6397809266025 in words is "six trillion, three hundred ninety-seven billion, eight hundred nine million, two hundred sixty-six thousand, twenty-five".