25978938274 has 16 divisors (see below), whose sum is σ = 39781757376. Its totient is φ = 12720229200.

The previous prime is 25978938257. The next prime is 25978938283. The reversal of 25978938274 is 47283987952.

It is a happy 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, 441342 + ... + 496729.

It is an arithmetic number, because the mean of its divisors is an integer number (2486359836).

Almost surely, 2^25978938274 is an apocalyptic number.

25978938274 is a deficient number, since it is larger than the sum of its proper divisors (13802819102).

25978938274 is a wasteful number, since it uses less digits than its factorization.

25978938274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938361.

The product of its digits is 60963840, while the sum is 64.

The spelling of 25978938274 in words is "twenty-five billion, nine hundred seventy-eight million, nine hundred thirty-eight thousand, two hundred seventy-four".