25505311 has 6 divisors (see below), whose sum is σ = 27618360. Its totient is φ = 23543208.

The previous prime is 25505303. The next prime is 25505317. The reversal of 25505311 is 11350552.

It is not a de Polignac number, because 25505311 - 2³ = 25505303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75291 + ... + 75628.

It is an arithmetic number, because the mean of its divisors is an integer number (4603060).

Almost surely, 2^25505311 is an apocalyptic number.

25505311 is a deficient number, since it is larger than the sum of its proper divisors (2113049).

25505311 is a wasteful number, since it uses less digits than its factorization.

25505311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150945 (or 150932 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 25505311 is about 5050.2783091628. The cubic root of 25505311 is about 294.3586988117.

Adding to 25505311 its reverse (11350552), we get a palindrome (36855863).

The spelling of 25505311 in words is "twenty-five million, five hundred five thousand, three hundred eleven".