25655026860 has 48 divisors (see below), whose sum is σ = 79815640800. Its totient is φ = 6841340352.

The previous prime is 25655026853. The next prime is 25655026877. The reversal of 25655026860 is 6862055652.

25655026860 is a `hidden beast` number, since 2 + 5 + 65 + 502 + 6 + 86 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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, 23754115 + ... + 23755194.

It is an arithmetic number, because the mean of its divisors is an integer number (1662825850).

Almost surely, 2^25655026860 is an apocalyptic number.

25655026860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25655026860 is an abundant number, since it is smaller than the sum of its proper divisors (54160613940).

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

25655026860 is a wasteful number, since it uses less digits than its factorization.

25655026860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47509327 (or 47509319 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 25655026860 in words is "twenty-five billion, six hundred fifty-five million, twenty-six thousand, eight hundred sixty".