25525342811 has 4 divisors (see below), whose sum is σ = 25957975800. Its totient is φ = 25092709824.

The previous prime is 25525342781. The next prime is 25525342837. The reversal of 25525342811 is 11824352552.

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 25525342811 - 2¹⁸ = 25525080667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25525342861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216316406 + ... + 216316523.

It is an arithmetic number, because the mean of its divisors is an integer number (6489493950).

Almost surely, 2^25525342811 is an apocalyptic number.

25525342811 is a deficient number, since it is larger than the sum of its proper divisors (432632989).

25525342811 is an equidigital number, since it uses as much as digits as its factorization.

25525342811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432632988.

The product of its digits is 96000, while the sum is 38.

The spelling of 25525342811 in words is "twenty-five billion, five hundred twenty-five million, three hundred forty-two thousand, eight hundred eleven".