25653855385 has 32 divisors (see below), whose sum is σ = 32870799360. Its totient is φ = 19164454848.

The previous prime is 25653855361. The next prime is 25653855439. The reversal of 25653855385 is 58355835652.

It is a cyclic number.

It is not a de Polignac number, because 25653855385 - 2¹⁹ = 25653331097 is a prime.

It is a super-2 number, since 2×25653855385² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3647242 + ... + 3654268.

It is an arithmetic number, because the mean of its divisors is an integer number (1027212480).

Almost surely, 2^25653855385 is an apocalyptic number.

It is an amenable number.

25653855385 is a deficient number, since it is larger than the sum of its proper divisors (7216943975).

25653855385 is a wasteful number, since it uses less digits than its factorization.

25653855385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7597.

The product of its digits is 21600000, while the sum is 55.

The spelling of 25653855385 in words is "twenty-five billion, six hundred fifty-three million, eight hundred fifty-five thousand, three hundred eighty-five".