25277298005 has 4 divisors (see below), whose sum is σ = 30332757612. Its totient is φ = 20221838400.

The previous prime is 25277298001. The next prime is 25277298023. The reversal of 25277298005 is 50089277252.

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 15721648996 + 9555649009 = 125386^2 + 97753^2 .

It is not a de Polignac number, because 25277298005 - 2² = 25277298001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25277298001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527729796 + ... + 2527729805.

It is an arithmetic number, because the mean of its divisors is an integer number (7583189403).

Almost surely, 2^25277298005 is an apocalyptic number.

It is an amenable number.

25277298005 is a deficient number, since it is larger than the sum of its proper divisors (5055459607).

25277298005 is an equidigital number, since it uses as much as digits as its factorization.

25277298005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055459606.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 25277298005 in words is "twenty-five billion, two hundred seventy-seven million, two hundred ninety-eight thousand, five".