25656855865652 has 24 divisors (see below), whose sum is σ = 49227407342400. Its totient is φ = 11603603151360.

The previous prime is 25656855865639. The next prime is 25656855865657.

25656855865652 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25656855865652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25656855865657) 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, 1465092653 + ... + 1465110164.

It is an arithmetic number, because the mean of its divisors is an integer number (2051141972600).

Almost surely, 2^{25656855865652} is an apocalyptic number.

25656855865652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25656855865652 is a deficient number, since it is larger than the sum of its proper divisors (23570551476748).

25656855865652 is a wasteful number, since it uses less digits than its factorization.

25656855865652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930203031 (or 2930203029 counting only the distinct ones).

The product of its digits is 5184000000, while the sum is 74.

The spelling of 25656855865652 in words is "twenty-five trillion, six hundred fifty-six billion, eight hundred fifty-five million, eight hundred sixty-five thousand, six hundred fifty-two".