25680146690 has 32 divisors (see below), whose sum is σ = 50445844416. Its totient is φ = 9334647360.

The previous prime is 25680146683. The next prime is 25680146707. The reversal of 25680146690 is 9664108652.

It is a super-2 number, since 2×25680146690² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251624 + ... + 338636.

It is an arithmetic number, because the mean of its divisors is an integer number (1576432638).

Almost surely, 2^25680146690 is an apocalyptic number.

25680146690 is a deficient number, since it is larger than the sum of its proper divisors (24765697726).

25680146690 is a wasteful number, since it uses less digits than its factorization.

25680146690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89714.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 25680146690 in words is "twenty-five billion, six hundred eighty million, one hundred forty-six thousand, six hundred ninety".