25349516678 has 16 divisors (see below), whose sum is σ = 38559599856. Its totient is φ = 12497479680.

The previous prime is 25349516617. The next prime is 25349516681. The reversal of 25349516678 is 87661594352.

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, 246968 + ... + 334203.

It is an arithmetic number, because the mean of its divisors is an integer number (2409974991).

Almost surely, 2^25349516678 is an apocalyptic number.

25349516678 is a deficient number, since it is larger than the sum of its proper divisors (13210083178).

25349516678 is a wasteful number, since it uses less digits than its factorization.

25349516678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581479.

The product of its digits is 10886400, while the sum is 56.

The spelling of 25349516678 in words is "twenty-five billion, three hundred forty-nine million, five hundred sixteen thousand, six hundred seventy-eight".