25680004964 has 6 divisors (see below), whose sum is σ = 44940008694. Its totient is φ = 12840002480.

The previous prime is 25680004963. The next prime is 25680004991. The reversal of 25680004964 is 46940008652.

It can be written as a sum of positive squares in only one way, i.e., 20733696064 + 4946308900 = 143992^2 + 70330^2 .

It is not an unprimeable number, because it can be changed into a prime (25680004963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210000617 + ... + 3210000624.

It is an arithmetic number, because the mean of its divisors is an integer number (7490001449).

Almost surely, 2^25680004964 is an apocalyptic number.

It is an amenable number.

25680004964 is a deficient number, since it is larger than the sum of its proper divisors (19260003730).

25680004964 is a wasteful number, since it uses less digits than its factorization.

25680004964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420001245 (or 6420001243 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 25680004964 in words is "twenty-five billion, six hundred eighty million, four thousand, nine hundred sixty-four".