25049777255 has 4 divisors (see below), whose sum is σ = 30059732712. Its totient is φ = 20039821800.

The previous prime is 25049777189. The next prime is 25049777299. The reversal of 25049777255 is 55277794052.

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

It is not a de Polignac number, because 25049777255 - 2¹⁴ = 25049760871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25049777197 and 25049777206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504977721 + ... + 2504977730.

It is an arithmetic number, because the mean of its divisors is an integer number (7514933178).

Almost surely, 2^25049777255 is an apocalyptic number.

25049777255 is a deficient number, since it is larger than the sum of its proper divisors (5009955457).

25049777255 is an equidigital number, since it uses as much as digits as its factorization.

25049777255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009955456.

The product of its (nonzero) digits is 6174000, while the sum is 53.

The spelling of 25049777255 in words is "twenty-five billion, forty-nine million, seven hundred seventy-seven thousand, two hundred fifty-five".