25555690678 has 16 divisors (see below), whose sum is σ = 45714528000. Its totient is φ = 10476245736.

The previous prime is 25555690663. The next prime is 25555690687. The reversal of 25555690678 is 87609655552.

It is a congruent 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, 39682428 + ... + 39683071.

It is an arithmetic number, because the mean of its divisors is an integer number (2857158000).

Almost surely, 2^25555690678 is an apocalyptic number.

25555690678 is a deficient number, since it is larger than the sum of its proper divisors (20158837322).

25555690678 is a wasteful number, since it uses less digits than its factorization.

25555690678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79365531.

The product of its (nonzero) digits is 22680000, while the sum is 58.

The spelling of 25555690678 in words is "twenty-five billion, five hundred fifty-five million, six hundred ninety thousand, six hundred seventy-eight".