25811110853 has 48 divisors (see below), whose sum is σ = 30301699968. Its totient is φ = 21757824000.

The previous prime is 25811110841. The next prime is 25811110877. The reversal of 25811110853 is 35801111852.

It is not a de Polignac number, because 25811110853 - 2⁶ = 25811110789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25811119853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188402201 + ... + 188402337.

It is an arithmetic number, because the mean of its divisors is an integer number (631285416).

Almost surely, 2^25811110853 is an apocalyptic number.

25811110853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25811110853 is a deficient number, since it is larger than the sum of its proper divisors (4490589115).

25811110853 is a wasteful number, since it uses less digits than its factorization.

25811110853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 35.

Subtracting 25811110853 from its reverse (35801111852), we obtain a palindrome (9990000999).

It can be divided in two parts, 258 and 11110853, that added together give a palindrome (11111111).

The spelling of 25811110853 in words is "twenty-five billion, eight hundred eleven million, one hundred ten thousand, eight hundred fifty-three".