25918534233 has 12 divisors (see below), whose sum is σ = 37445539248. Its totient is φ = 17275489080.

The previous prime is 25918534231. The next prime is 25918534247. The reversal of 25918534233 is 33243581952.

25918534233 is a `hidden beast` number, since 2 + 5 + 91 + 8 + 534 + 23 + 3 = 666.

It is not a de Polignac number, because 25918534233 - 2¹ = 25918534231 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25918534231) 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 11 ways as a sum of consecutive naturals, for example, 247635 + ... + 336392.

It is an arithmetic number, because the mean of its divisors is an integer number (3120461604).

Almost surely, 2^25918534233 is an apocalyptic number.

It is an amenable number.

25918534233 is a deficient number, since it is larger than the sum of its proper divisors (11527005015).

25918534233 is a wasteful number, since it uses less digits than its factorization.

25918534233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588964 (or 588961 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 25918534233 in words is "twenty-five billion, nine hundred eighteen million, five hundred thirty-four thousand, two hundred thirty-three".