25715320847999 has 8 divisors (see below), whose sum is σ = 26041066460160. Its totient is φ = 25389581116536.

The previous prime is 25715320847959. The next prime is 25715320848017. The reversal of 25715320847999 is 99974802351752.

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

It is a cyclic number.

It is not a de Polignac number, because 25715320847999 - 2¹² = 25715320843903 is a prime.

It is a super-2 number, since 2×25715320847999² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715320847939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7690094 + ... + 10515140.

It is an arithmetic number, because the mean of its divisors is an integer number (3255133307520).

Almost surely, 2^{25715320847999} is an apocalyptic number.

25715320847999 is a deficient number, since it is larger than the sum of its proper divisors (325745612161).

25715320847999 is a wasteful number, since it uses less digits than its factorization.

25715320847999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940349.

The product of its (nonzero) digits is 342921600, while the sum is 71.

The spelling of 25715320847999 in words is "twenty-five trillion, seven hundred fifteen billion, three hundred twenty million, eight hundred forty-seven thousand, nine hundred ninety-nine".