25543324233 has 48 divisors (see below), whose sum is σ = 42499416960. Its totient is φ = 14481499392.

The previous prime is 25543324151. The next prime is 25543324237. The reversal of 25543324233 is 33242334552.

It is a happy number.

25543324233 is a `hidden beast` number, since 2 + 554 + 3 + 32 + 42 + 33 = 666.

It is not a de Polignac number, because 25543324233 - 2¹⁰ = 25543323209 is a prime.

It is a super-2 number, since 2×25543324233² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25543324237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4297978 + ... + 4303916.

It is an arithmetic number, because the mean of its divisors is an integer number (885404520).

Almost surely, 2^25543324233 is an apocalyptic number.

It is an amenable number.

25543324233 is a deficient number, since it is larger than the sum of its proper divisors (16956092727).

25543324233 is a wasteful number, since it uses less digits than its factorization.

25543324233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478 (or 6475 counting only the distinct ones).

The product of its digits is 259200, while the sum is 36.

Adding to 25543324233 its reverse (33242334552), we get a palindrome (58785658785).

The spelling of 25543324233 in words is "twenty-five billion, five hundred forty-three million, three hundred twenty-four thousand, two hundred thirty-three".