25662040563 has 16 divisors (see below), whose sum is σ = 35025326336. Its totient is φ = 16703699040.

The previous prime is 25662040553. The next prime is 25662040609. The reversal of 25662040563 is 36504026652.

It is not a de Polignac number, because 25662040563 - 2⁶ = 25662040499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25662040553) 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, 308178 + ... + 382488.

It is an arithmetic number, because the mean of its divisors is an integer number (2189082896).

Almost surely, 2^25662040563 is an apocalyptic number.

25662040563 is a deficient number, since it is larger than the sum of its proper divisors (9363285773).

25662040563 is a wasteful number, since it uses less digits than its factorization.

25662040563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77034.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 25662040563 in words is "twenty-five billion, six hundred sixty-two million, forty thousand, five hundred sixty-three".