25847894016 has 416 divisors, whose sum is σ = 88478526720. Its totient is φ = 7304380416.

The previous prime is 25847894011. The next prime is 25847894053. The reversal of 25847894016 is 61049874852.

It is a happy number.

25847894016 is a `hidden beast` number, since 2 + 584 + 7 + 8 + 9 + 40 + 16 = 666.

It is a super-2 number, since 2×25847894016² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25847894011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133926816 + ... + 133927008.

Almost surely, 2^25847894016 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 25847894016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44239263360).

25847894016 is an abundant number, since it is smaller than the sum of its proper divisors (62630632704).

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

25847894016 is a wasteful number, since it uses less digits than its factorization.

25847894016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 25847894016 in words is "twenty-five billion, eight hundred forty-seven million, eight hundred ninety-four thousand, sixteen".