25870000009 has 16 divisors (see below), whose sum is σ = 29730146688. Its totient is φ = 22051072512.

The previous prime is 25870000003. The next prime is 25870000027. The reversal of 25870000009 is 90000007852.

It is not a de Polignac number, because 25870000009 - 2⁵ = 25869999977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25870000003) 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 15 ways as a sum of consecutive naturals, for example, 4414009 + ... + 4419865.

It is an arithmetic number, because the mean of its divisors is an integer number (1858134168).

Almost surely, 2^25870000009 is an apocalyptic number.

It is an amenable number.

25870000009 is a deficient number, since it is larger than the sum of its proper divisors (3860146679).

25870000009 is a wasteful number, since it uses less digits than its factorization.

25870000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 25870000009 in words is "twenty-five billion, eight hundred seventy million, nine", and thus it is an aban number.