25152206765566 has 8 divisors (see below), whose sum is σ = 37729637340120. Its totient is φ = 12575660985528.

The previous prime is 25152206765563. The next prime is 25152206765579. The reversal of 25152206765566 is 66556760225152.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25152206765566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25152206765563) 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, 221127556 + ... + 221241271.

It is an arithmetic number, because the mean of its divisors is an integer number (4716204667515).

Almost surely, 2^{25152206765566} is an apocalyptic number.

25152206765566 is a deficient number, since it is larger than the sum of its proper divisors (12577430574554).

25152206765566 is a wasteful number, since it uses less digits than its factorization.

25152206765566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442397258.

The product of its (nonzero) digits is 45360000, while the sum is 58.

The spelling of 25152206765566 in words is "twenty-five trillion, one hundred fifty-two billion, two hundred six million, seven hundred sixty-five thousand, five hundred sixty-six".