25717328089 has 4 divisors (see below), whose sum is σ = 25717744080. Its totient is φ = 25716912100.

The previous prime is 25717328083. The next prime is 25717328101. The reversal of 25717328089 is 98082371752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25717328089 - 2⁹ = 25717327577 is a prime.

It is a super-2 number, since 2×25717328089² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25717328083) 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, 94687 + ... + 245764.

It is an arithmetic number, because the mean of its divisors is an integer number (6429436020).

Almost surely, 2^25717328089 is an apocalyptic number.

It is an amenable number.

25717328089 is a deficient number, since it is larger than the sum of its proper divisors (415991).

25717328089 is an equidigital number, since it uses as much as digits as its factorization.

25717328089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415990.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 25717328089 in words is "twenty-five billion, seven hundred seventeen million, three hundred twenty-eight thousand, eighty-nine".