25223021233 has 4 divisors (see below), whose sum is σ = 25698927348. Its totient is φ = 24747115120.

The previous prime is 25223021177. The next prime is 25223021251. The reversal of 25223021233 is 33212032252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6220950129 + 19002071104 = 78873^2 + 137848^2 .

It is a cyclic number.

It is not a de Polignac number, because 25223021233 - 2⁹ = 25223020721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25223021198 and 25223021207.

It is not an unprimeable number, because it can be changed into a prime (25223421233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237952978 + ... + 237953083.

It is an arithmetic number, because the mean of its divisors is an integer number (6424731837).

Almost surely, 2^25223021233 is an apocalyptic number.

It is an amenable number.

25223021233 is a deficient number, since it is larger than the sum of its proper divisors (475906115).

25223021233 is an equidigital number, since it uses as much as digits as its factorization.

25223021233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475906114.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 25223021233 its reverse (33212032252), we get a palindrome (58435053485).

The spelling of 25223021233 in words is "twenty-five billion, two hundred twenty-three million, twenty-one thousand, two hundred thirty-three".