25031608897 has 8 divisors (see below), whose sum is σ = 25067203112. Its totient is φ = 24996038400.

The previous prime is 25031608891. The next prime is 25031608907. The reversal of 25031608897 is 79880613052.

It can be written as a sum of positive squares in 4 ways, for example, as 15049400976 + 9982207921 = 122676^2 + 99911^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25031608897 - 2¹¹ = 25031606849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25031608897.

It is not an unprimeable number, because it can be changed into a prime (25031608891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3280747 + ... + 3288367.

It is an arithmetic number, because the mean of its divisors is an integer number (3133400389).

Almost surely, 2^25031608897 is an apocalyptic number.

It is an amenable number.

25031608897 is a deficient number, since it is larger than the sum of its proper divisors (35594215).

25031608897 is a wasteful number, since it uses less digits than its factorization.

25031608897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11859.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 25031608897 in words is "twenty-five billion, thirty-one million, six hundred eight thousand, eight hundred ninety-seven".