25500275005 has 4 divisors (see below), whose sum is σ = 30600330012. Its totient is φ = 20400220000.

The previous prime is 25500274999. The next prime is 25500275011. The reversal of 25500275005 is 50057200552.

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

It is an interprime number because it is at equal distance from previous prime (25500274999) and next prime (25500275011).

It can be written as a sum of positive squares in 2 ways, for example, as 19913160996 + 5587114009 = 141114^2 + 74747^2 .

It is not a de Polignac number, because 25500275005 - 2⁹ = 25500274493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550027496 + ... + 2550027505.

It is an arithmetic number, because the mean of its divisors is an integer number (7650082503).

Almost surely, 2^25500275005 is an apocalyptic number.

It is an amenable number.

25500275005 is a deficient number, since it is larger than the sum of its proper divisors (5100055007).

25500275005 is an equidigital number, since it uses as much as digits as its factorization.

25500275005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100055006.

The product of its (nonzero) digits is 17500, while the sum is 31.

Adding to 25500275005 its reverse (50057200552), we get a palindrome (75557475557).

The spelling of 25500275005 in words is "twenty-five billion, five hundred million, two hundred seventy-five thousand, five".