25011111011 has 4 divisors (see below), whose sum is σ = 25011826224. Its totient is φ = 25010395800.

The previous prime is 25011110989. The next prime is 25011111017. The reversal of 25011111011 is 11011111052.

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

It is a cyclic number.

It is not a de Polignac number, because 25011111011 - 2¹⁰ = 25011109987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25011111017) by changing a digit.

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, 302300 + ... + 376041.

It is an arithmetic number, because the mean of its divisors is an integer number (6252956556).

Almost surely, 2^25011111011 is an apocalyptic number.

25011111011 is a deficient number, since it is larger than the sum of its proper divisors (715213).

25011111011 is an equidigital number, since it uses as much as digits as its factorization.

25011111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715212.

The product of its (nonzero) digits is 10, while the sum is 14.

Adding to 25011111011 its reverse (11011111052), we get a palindrome (36022222063).

The spelling of 25011111011 in words is "twenty-five billion, eleven million, one hundred eleven thousand, eleven".