25398080065 has 8 divisors (see below), whose sum is σ = 30895199208. Its totient is φ = 20040128640.

The previous prime is 25398080051. The next prime is 25398080107. The reversal of 25398080065 is 56008089352.

It can be written as a sum of positive squares in 4 ways, for example, as 10749335041 + 14648745024 = 103679^2 + 121032^2 .

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

It is not a de Polignac number, because 25398080065 - 2⁵ = 25398080033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25398079997 and 25398080024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34791526 + ... + 34792255.

It is an arithmetic number, because the mean of its divisors is an integer number (3861899901).

Almost surely, 2^25398080065 is an apocalyptic number.

It is an amenable number.

25398080065 is a deficient number, since it is larger than the sum of its proper divisors (5497119143).

25398080065 is an equidigital number, since it uses as much as digits as its factorization.

25398080065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69583859.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 25398080065 in words is "twenty-five billion, three hundred ninety-eight million, eighty thousand, sixty-five".