25195892273 has 4 divisors (see below), whose sum is σ = 25196604708. Its totient is φ = 25195179840.

The previous prime is 25195892251. The next prime is 25195892327. The reversal of 25195892273 is 37229859152.

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 12784372624 + 12411519649 = 113068^2 + 111407^2 .

It is a cyclic number.

It is not a de Polignac number, because 25195892273 - 2⁶ = 25195892209 is a prime.

It is a super-2 number, since 2×25195892273² (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 (25195892203) 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, 300236 + ... + 374877.

It is an arithmetic number, because the mean of its divisors is an integer number (6299151177).

Almost surely, 2^25195892273 is an apocalyptic number.

It is an amenable number.

25195892273 is a deficient number, since it is larger than the sum of its proper divisors (712435).

25195892273 is an equidigital number, since it uses as much as digits as its factorization.

25195892273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712434.

The product of its digits is 2721600, while the sum is 53.

The spelling of 25195892273 in words is "twenty-five billion, one hundred ninety-five million, eight hundred ninety-two thousand, two hundred seventy-three".