25655455615 has 8 divisors (see below), whose sum is σ = 30790490688. Its totient is φ = 20521735200.

The previous prime is 25655455613. The next prime is 25655455621. The reversal of 25655455615 is 51655455652.

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

It is not a de Polignac number, because 25655455615 - 2¹ = 25655455613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25655455613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285207 + ... + 364216.

It is an arithmetic number, because the mean of its divisors is an integer number (3848811336).

Almost surely, 2^25655455615 is an apocalyptic number.

25655455615 is a deficient number, since it is larger than the sum of its proper divisors (5135035073).

25655455615 is an equidigital number, since it uses as much as digits as its factorization.

25655455615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657329.

The product of its digits is 4500000, while the sum is 49.

The spelling of 25655455615 in words is "twenty-five billion, six hundred fifty-five million, four hundred fifty-five thousand, six hundred fifteen".