6425996705 has 8 divisors (see below), whose sum is σ = 7744292712. Its totient is φ = 5118732928.

The previous prime is 6425996699. The next prime is 6425996729. The reversal of 6425996705 is 5076995246.

It can be written as a sum of positive squares in 4 ways, for example, as 22316176 + 6403680529 = 4724^2 + 80023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6425996705 - 2⁶ = 6425996641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2756774 + ... + 2759103.

It is an arithmetic number, because the mean of its divisors is an integer number (968036589).

Almost surely, 2^6425996705 is an apocalyptic number.

It is an amenable number.

6425996705 is a deficient number, since it is larger than the sum of its proper divisors (1318296007).

6425996705 is a wasteful number, since it uses less digits than its factorization.

6425996705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516115.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The square root of 6425996705 is about 80162.3147432757. The cubic root of 6425996705 is about 1859.1460126566.

The spelling of 6425996705 in words is "six billion, four hundred twenty-five million, nine hundred ninety-six thousand, seven hundred five".