25694709616 has 10 divisors (see below), whose sum is σ = 49783499912. Its totient is φ = 12847354800.

The previous prime is 25694709587. The next prime is 25694709637. The reversal of 25694709616 is 61690749652.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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 as a sum of consecutive naturals, namely, 802959660 + ... + 802959691.

Almost surely, 2^25694709616 is an apocalyptic number.

It is an amenable number.

25694709616 is a deficient number, since it is larger than the sum of its proper divisors (24088790296).

25694709616 is a wasteful number, since it uses less digits than its factorization.

25694709616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605919359 (or 1605919353 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 25694709616 in words is "twenty-five billion, six hundred ninety-four million, seven hundred nine thousand, six hundred sixteen".