25861860580 has 48 divisors (see below), whose sum is σ = 55291481280. Its totient is φ = 10158166400.

The previous prime is 25861860569. The next prime is 25861860593. The reversal of 25861860580 is 8506816852.

It is a happy number.

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, 1098735 + ... + 1122025.

It is an arithmetic number, because the mean of its divisors is an integer number (1151905860).

Almost surely, 2^25861860580 is an apocalyptic number.

25861860580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25861860580 is an abundant number, since it is smaller than the sum of its proper divisors (29429620700).

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

25861860580 is a wasteful number, since it uses less digits than its factorization.

25861860580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24300 (or 24298 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 25861860580 in words is "twenty-five billion, eight hundred sixty-one million, eight hundred sixty thousand, five hundred eighty".