25111540255 has 4 divisors (see below), whose sum is σ = 30133848312. Its totient is φ = 20089232200.

The previous prime is 25111540217. The next prime is 25111540381. The reversal of 25111540255 is 55204511152.

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

It is not a de Polignac number, because 25111540255 - 2⁹ = 25111539743 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2511154021 + ... + 2511154030.

It is an arithmetic number, because the mean of its divisors is an integer number (7533462078).

Almost surely, 2^25111540255 is an apocalyptic number.

25111540255 is a deficient number, since it is larger than the sum of its proper divisors (5022308057).

25111540255 is an equidigital number, since it uses as much as digits as its factorization.

25111540255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022308056.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 25111540255 in words is "twenty-five billion, one hundred eleven million, five hundred forty thousand, two hundred fifty-five".