25870780718 has 4 divisors (see below), whose sum is σ = 38806171080. Its totient is φ = 12935390358.

The previous prime is 25870780717. The next prime is 25870780729. The reversal of 25870780718 is 81708707852.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25870780718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25870780717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6467695178 + ... + 6467695181.

It is an arithmetic number, because the mean of its divisors is an integer number (9701542770).

Almost surely, 2^25870780718 is an apocalyptic number.

25870780718 is a deficient number, since it is larger than the sum of its proper divisors (12935390362).

25870780718 is a wasteful number, since it uses less digits than its factorization.

25870780718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935390361.

The product of its (nonzero) digits is 1756160, while the sum is 53.

The spelling of 25870780718 in words is "twenty-five billion, eight hundred seventy million, seven hundred eighty thousand, seven hundred eighteen".