25489869448 has 16 divisors (see below), whose sum is σ = 48057560460. Its totient is φ = 12674520000.

The previous prime is 25489869437. The next prime is 25489869469. The reversal of 25489869448 is 84496898452.

It can be written as a sum of positive squares in 2 ways, for example, as 25458755364 + 31114084 = 159558^2 + 5578^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8800303 + ... + 8803198.

Almost surely, 2^25489869448 is an apocalyptic number.

It is an amenable number.

25489869448 is a deficient number, since it is larger than the sum of its proper divisors (22567691012).

25489869448 is a wasteful number, since it uses less digits than its factorization.

25489869448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17603688 (or 17603684 counting only the distinct ones).

The product of its digits is 159252480, while the sum is 67.

The spelling of 25489869448 in words is "twenty-five billion, four hundred eighty-nine million, eight hundred sixty-nine thousand, four hundred forty-eight".