25128095105 has 4 divisors (see below), whose sum is σ = 30153714132. Its totient is φ = 20102476080.

The previous prime is 25128095093. The next prime is 25128095107. The reversal of 25128095105 is 50159082152.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6152206096 + 18975889009 = 78436^2 + 137753^2 .

It is not a de Polignac number, because 25128095105 - 2³⁴ = 7948225921 is a prime.

It is a super-2 number, since 2×25128095105² (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 (25128095107) 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, 2512809506 + ... + 2512809515.

It is an arithmetic number, because the mean of its divisors is an integer number (7538428533).

Almost surely, 2^25128095105 is an apocalyptic number.

It is an amenable number.

25128095105 is a deficient number, since it is larger than the sum of its proper divisors (5025619027).

25128095105 is an equidigital number, since it uses as much as digits as its factorization.

25128095105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025619026.

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 25128095105 in words is "twenty-five billion, one hundred twenty-eight million, ninety-five thousand, one hundred five".