6425620161 has 16 divisors (see below), whose sum is σ = 9069044160. Its totient is φ = 4039842240.

The previous prime is 6425620129. The next prime is 6425620183. The reversal of 6425620161 is 1610265246.

It is not a de Polignac number, because 6425620161 - 2⁵ = 6425620129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6425620111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855070 + ... + 862551.

It is an arithmetic number, because the mean of its divisors is an integer number (566815260).

Almost surely, 2^6425620161 is an apocalyptic number.

It is an amenable number.

6425620161 is a deficient number, since it is larger than the sum of its proper divisors (2643423999).

6425620161 is a wasteful number, since it uses less digits than its factorization.

6425620161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717696.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 6425620161 is about 80159.9660740946. The cubic root of 6425620161 is about 1859.1096985001.

The spelling of 6425620161 in words is "six billion, four hundred twenty-five million, six hundred twenty thousand, one hundred sixty-one".