25656222243156 has 12 divisors (see below), whose sum is σ = 59864518567392. Its totient is φ = 8552074081048.

The previous prime is 25656222243151. The next prime is 25656222243163. The reversal of 25656222243156 is 65134222265652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25656222243099 and 25656222243108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25656222243151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069009260120 + ... + 1069009260143.

It is an arithmetic number, because the mean of its divisors is an integer number (4988709880616).

Almost surely, 2^{25656222243156} is an apocalyptic number.

It is an amenable number.

25656222243156 is an abundant number, since it is smaller than the sum of its proper divisors (34208296324236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25656222243156 is a wasteful number, since it uses less digits than its factorization.

25656222243156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138018520270 (or 2138018520268 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 51.

The spelling of 25656222243156 in words is "twenty-five trillion, six hundred fifty-six billion, two hundred twenty-two million, two hundred forty-three thousand, one hundred fifty-six".