26257852860 has 48 divisors (see below), whose sum is σ = 77846813856. Its totient is φ = 6590205952.

The previous prime is 26257852847. The next prime is 26257852867. The reversal of 26257852860 is 6825875262.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26257852867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12870477 + ... + 12872516.

It is an arithmetic number, because the mean of its divisors is an integer number (1621808622).

Almost surely, 2^26257852860 is an apocalyptic number.

26257852860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26257852860 is an abundant number, since it is smaller than the sum of its proper divisors (51588960996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26257852860 is a wasteful number, since it uses less digits than its factorization.

26257852860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25743022 (or 25743020 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 26257852860 in words is "twenty-six billion, two hundred fifty-seven million, eight hundred fifty-two thousand, eight hundred sixty".