25909256086 has 8 divisors (see below), whose sum is σ = 44415867600. Its totient is φ = 11103966888.

The previous prime is 25909256071. The next prime is 25909256089. The reversal of 25909256086 is 68065290952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25909256089) 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 3 ways as a sum of consecutive naturals, for example, 925330561 + ... + 925330588.

It is an arithmetic number, because the mean of its divisors is an integer number (5551983450).

Almost surely, 2^25909256086 is an apocalyptic number.

25909256086 is a deficient number, since it is larger than the sum of its proper divisors (18506611514).

25909256086 is a wasteful number, since it uses less digits than its factorization.

25909256086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850661158.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 25909256086 in words is "twenty-five billion, nine hundred nine million, two hundred fifty-six thousand, eighty-six".