25847700047 has 4 divisors (see below), whose sum is σ = 27835984680. Its totient is φ = 23859415416.

The previous prime is 25847700037. The next prime is 25847700079. The reversal of 25847700047 is 74000774852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25847700047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25847699980 and 25847700007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25847700037) 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, 994142297 + ... + 994142322.

It is an arithmetic number, because the mean of its divisors is an integer number (6958996170).

Almost surely, 2^25847700047 is an apocalyptic number.

25847700047 is a deficient number, since it is larger than the sum of its proper divisors (1988284633).

25847700047 is a wasteful number, since it uses less digits than its factorization.

25847700047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988284632.

The product of its (nonzero) digits is 439040, while the sum is 44.

The spelling of 25847700047 in words is "twenty-five billion, eight hundred forty-seven million, seven hundred thousand, forty-seven".