25785004992 has 28 divisors (see below), whose sum is σ = 68222826216. Its totient is φ = 8595001600.

The previous prime is 25785004991. The next prime is 25785005003. The reversal of 25785004992 is 29940058752.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25785004991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67148259 + ... + 67148642.

Almost surely, 2^25785004992 is an apocalyptic number.

It is an amenable number.

25785004992 is an abundant number, since it is smaller than the sum of its proper divisors (42437821224).

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

25785004992 is a wasteful number, since it uses less digits than its factorization.

25785004992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134296916 (or 134296906 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 25785004992 in words is "twenty-five billion, seven hundred eighty-five million, four thousand, nine hundred ninety-two".