25644233 has 4 divisors (see below), whose sum is σ = 25778688. Its totient is φ = 25509780.

The previous prime is 25644197. The next prime is 25644251. The reversal of 25644233 is 33244652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25644233 - 2⁶ = 25644169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25644196 and 25644205.

It is not an unprimeable number, because it can be changed into a prime (25644253) 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, 66941 + ... + 67322.

It is an arithmetic number, because the mean of its divisors is an integer number (6444672).

Almost surely, 2^25644233 is an apocalyptic number.

It is an amenable number.

25644233 is a deficient number, since it is larger than the sum of its proper divisors (134455).

25644233 is a wasteful number, since it uses less digits than its factorization.

25644233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134454.

The product of its digits is 17280, while the sum is 29.

The square root of 25644233 is about 5064.0135268382. The cubic root of 25644233 is about 294.8921678087.

Adding to 25644233 its reverse (33244652), we get a palindrome (58888885).

The spelling of 25644233 in words is "twenty-five million, six hundred forty-four thousand, two hundred thirty-three".