25665850445 has 8 divisors (see below), whose sum is σ = 30801253344. Its totient is φ = 20531191824.

The previous prime is 25665850439. The next prime is 25665850459. The reversal of 25665850445 is 54405856652.

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

It is a cyclic number.

It is not a de Polignac number, because 25665850445 - 2¹⁸ = 25665588301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25665850393 and 25665850402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107159 + ... + 250628.

It is an arithmetic number, because the mean of its divisors is an integer number (3850156668).

Almost surely, 2^25665850445 is an apocalyptic number.

It is an amenable number.

25665850445 is a deficient number, since it is larger than the sum of its proper divisors (5135402899).

25665850445 is a wasteful number, since it uses less digits than its factorization.

25665850445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372139.

The product of its (nonzero) digits is 5760000, while the sum is 50.

The spelling of 25665850445 in words is "twenty-five billion, six hundred sixty-five million, eight hundred fifty thousand, four hundred forty-five".