25511144012011 has 16 divisors (see below), whose sum is σ = 30110864797440. Its totient is φ = 21156844399200.

The previous prime is 25511144011993. The next prime is 25511144012017. The reversal of 25511144012011 is 11021044111552.

It is a cyclic number.

It is not a de Polignac number, because 25511144012011 - 2⁵ = 25511144011979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25511144012017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275089465 + ... + 275182186.

It is an arithmetic number, because the mean of its divisors is an integer number (1881929049840).

Almost surely, 2^{25511144012011} is an apocalyptic number.

25511144012011 is a deficient number, since it is larger than the sum of its proper divisors (4599720785429).

25511144012011 is a wasteful number, since it uses less digits than its factorization.

25511144012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550271874.

The product of its (nonzero) digits is 1600, while the sum is 28.

Adding to 25511144012011 its reverse (11021044111552), we get a palindrome (36532188123563).

The spelling of 25511144012011 in words is "twenty-five trillion, five hundred eleven billion, one hundred forty-four million, twelve thousand, eleven".