25698205860 has 24 divisors (see below), whose sum is σ = 71954976576. Its totient is φ = 6852854880.

The previous prime is 25698205807. The next prime is 25698205867. The reversal of 25698205860 is 6850289652.

It is not an unprimeable number, because it can be changed into a prime (25698205867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214151656 + ... + 214151775.

It is an arithmetic number, because the mean of its divisors is an integer number (2998124024).

Almost surely, 2^25698205860 is an apocalyptic number.

25698205860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25698205860 is an abundant number, since it is smaller than the sum of its proper divisors (46256770716).

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

25698205860 is a wasteful number, since it uses less digits than its factorization.

25698205860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428303443 (or 428303441 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 25698205860 in words is "twenty-five billion, six hundred ninety-eight million, two hundred five thousand, eight hundred sixty".