25915611011 has 16 divisors (see below), whose sum is σ = 27277785600. Its totient is φ = 24587690400.

The previous prime is 25915610977. The next prime is 25915611037. The reversal of 25915611011 is 11011651952.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25915611011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25915601011) 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, 456596 + ... + 510206.

It is an arithmetic number, because the mean of its divisors is an integer number (1704861600).

Almost surely, 2^25915611011 is an apocalyptic number.

25915611011 is a deficient number, since it is larger than the sum of its proper divisors (1362174589).

25915611011 is a wasteful number, since it uses less digits than its factorization.

25915611011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53930.

The product of its (nonzero) digits is 2700, while the sum is 32.

The spelling of 25915611011 in words is "twenty-five billion, nine hundred fifteen million, six hundred eleven thousand, eleven".