25895917825 has 24 divisors (see below), whose sum is σ = 33132379392. Its totient is φ = 20066833920.

The previous prime is 25895917793. The next prime is 25895917837. The reversal of 25895917825 is 52871959852.

It is not a de Polignac number, because 25895917825 - 2⁵ = 25895917793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372 + ... + 227578.

It is an arithmetic number, because the mean of its divisors is an integer number (1380515808).

Almost surely, 2^25895917825 is an apocalyptic number.

25895917825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25895917825 is a deficient number, since it is larger than the sum of its proper divisors (7236461567).

25895917825 is a wasteful number, since it uses less digits than its factorization.

25895917825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227361 (or 227356 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 61.

The spelling of 25895917825 in words is "twenty-five billion, eight hundred ninety-five million, nine hundred seventeen thousand, eight hundred twenty-five".