25089681863 has 4 divisors (see below), whose sum is σ = 26565545520. Its totient is φ = 23613818208.

The previous prime is 25089681853. The next prime is 25089681937. The reversal of 25089681863 is 36818698052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25089681863 - 2¹⁶ = 25089616327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25089681799 and 25089681808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25089681823) 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, 737931803 + ... + 737931836.

It is an arithmetic number, because the mean of its divisors is an integer number (6641386380).

Almost surely, 2^25089681863 is an apocalyptic number.

25089681863 is a deficient number, since it is larger than the sum of its proper divisors (1475863657).

25089681863 is a wasteful number, since it uses less digits than its factorization.

25089681863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475863656.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 25089681863 in words is "twenty-five billion, eighty-nine million, six hundred eighty-one thousand, eight hundred sixty-three".