25855947385 has 8 divisors (see below), whose sum is σ = 31174186176. Its totient is φ = 20586725040.

The previous prime is 25855947353. The next prime is 25855947401. The reversal of 25855947385 is 58374955852.

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

It is not a de Polignac number, because 25855947385 - 2⁵ = 25855947353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12252949 + ... + 12255058.

It is an arithmetic number, because the mean of its divisors is an integer number (3896773272).

Almost surely, 2^25855947385 is an apocalyptic number.

It is an amenable number.

25855947385 is a deficient number, since it is larger than the sum of its proper divisors (5318238791).

25855947385 is a wasteful number, since it uses less digits than its factorization.

25855947385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24508223.

The product of its digits is 60480000, while the sum is 61.

The spelling of 25855947385 in words is "twenty-five billion, eight hundred fifty-five million, nine hundred forty-seven thousand, three hundred eighty-five".