25709617882 has 8 divisors (see below), whose sum is σ = 41530921236. Its totient is φ = 11865977472.

The previous prime is 25709617873. The next prime is 25709617883. The reversal of 25709617882 is 28871690752.

It can be written as a sum of positive squares in 2 ways, for example, as 25456521601 + 253096281 = 159551^2 + 15909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25709617883) 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, 494415703 + ... + 494415754.

Almost surely, 2^25709617882 is an apocalyptic number.

25709617882 is a deficient number, since it is larger than the sum of its proper divisors (15821303354).

25709617882 is a wasteful number, since it uses less digits than its factorization.

25709617882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988831472.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 25709617882 in words is "twenty-five billion, seven hundred nine million, six hundred seventeen thousand, eight hundred eighty-two".