25379978688 has 84 divisors (see below), whose sum is σ = 76575955560. Its totient is φ = 8014726656.

The previous prime is 25379978683. The next prime is 25379978699. The reversal of 25379978688 is 88687997352.

25379978688 is a `hidden beast` number, since 2 + 537 + 9 + 9 + 7 + 8 + 6 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25379978681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1148595 + ... + 1170482.

Almost surely, 2^25379978688 is an apocalyptic number.

It is an amenable number.

25379978688 is an abundant number, since it is smaller than the sum of its proper divisors (51195976872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25379978688 is a wasteful number, since it uses less digits than its factorization.

25379978688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319114 (or 2319101 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 72.

The spelling of 25379978688 in words is "twenty-five billion, three hundred seventy-nine million, nine hundred seventy-eight thousand, six hundred eighty-eight".