25870242047 has 24 divisors (see below), whose sum is σ = 29566551168. Its totient is φ = 22484900160.

The previous prime is 25870242023. The next prime is 25870242049. The reversal of 25870242047 is 74024207852.

It is not a de Polignac number, because 25870242047 - 2¹⁶ = 25870176511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25870241995 and 25870242013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25870242049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434258 + ... + 490224.

It is an arithmetic number, because the mean of its divisors is an integer number (1231939632).

Almost surely, 2^25870242047 is an apocalyptic number.

25870242047 is a deficient number, since it is larger than the sum of its proper divisors (3696309121).

25870242047 is a wasteful number, since it uses less digits than its factorization.

25870242047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56079 (or 56048 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 41.

Adding to 25870242047 its reverse (74024207852), we get a palindrome (99894449899).

The spelling of 25870242047 in words is "twenty-five billion, eight hundred seventy million, two hundred forty-two thousand, forty-seven".