25870786673 has 4 divisors (see below), whose sum is σ = 25882322928. Its totient is φ = 25859250420.

The previous prime is 25870786661. The next prime is 25870786679. The reversal of 25870786673 is 37668707852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25870786673 - 2⁴ = 25870786657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25870786679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5764763 + ... + 5769248.

It is an arithmetic number, because the mean of its divisors is an integer number (6470580732).

Almost surely, 2^25870786673 is an apocalyptic number.

It is an amenable number.

25870786673 is a deficient number, since it is larger than the sum of its proper divisors (11536255).

25870786673 is a wasteful number, since it uses less digits than its factorization.

25870786673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536254.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 25870786673 in words is "twenty-five billion, eight hundred seventy million, seven hundred eighty-six thousand, six hundred seventy-three".