25566543054023 has 16 divisors (see below), whose sum is σ = 25841103855840. Its totient is φ = 25293554294400.

The previous prime is 25566543054001. The next prime is 25566543054043. The reversal of 25566543054023 is 32045034566552.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25566543054023 - 2³⁰ = 25565469312199 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 (25566543054043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86507861 + ... + 86802897.

It is an arithmetic number, because the mean of its divisors is an integer number (1615068990990).

Almost surely, 2^{25566543054023} is an apocalyptic number.

25566543054023 is a deficient number, since it is larger than the sum of its proper divisors (274560801817).

25566543054023 is a wasteful number, since it uses less digits than its factorization.

25566543054023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297698.

The product of its (nonzero) digits is 12960000, while the sum is 50.

The spelling of 25566543054023 in words is "twenty-five trillion, five hundred sixty-six billion, five hundred forty-three million, fifty-four thousand, twenty-three".