25979885316 has 216 divisors, whose sum is σ = 87350739840. Its totient is φ = 6350952960.

The previous prime is 25979885303. The next prime is 25979885317. The reversal of 25979885316 is 61358897952.

25979885316 is a `hidden beast` number, since 2 + 5 + 9 + 7 + 98 + 8 + 531 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25979885317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 493305 + ... + 543423.

Almost surely, 2^25979885316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25979885316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43675369920).

25979885316 is an abundant number, since it is smaller than the sum of its proper divisors (61370854524).

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

25979885316 is a wasteful number, since it uses less digits than its factorization.

25979885316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50175 (or 50159 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 63.

The spelling of 25979885316 in words is "twenty-five billion, nine hundred seventy-nine million, eight hundred eighty-five thousand, three hundred sixteen".