25444223 has 32 divisors (see below), whose sum is σ = 32607360. Its totient is φ = 19353600.

The previous prime is 25444219. The next prime is 25444253. The reversal of 25444223 is 32244452.

It is a happy number.

It is not a de Polignac number, because 25444223 - 2² = 25444219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25444192 and 25444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25444213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251873 + ... + 251973.

It is an arithmetic number, because the mean of its divisors is an integer number (1018980).

Almost surely, 2^25444223 is an apocalyptic number.

25444223 is a deficient number, since it is larger than the sum of its proper divisors (7163137).

25444223 is a wasteful number, since it uses less digits than its factorization.

25444223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227.

The product of its digits is 7680, while the sum is 26.

The square root of 25444223 is about 5044.2266999016. The cubic root of 25444223 is about 294.1235038826.

Adding to 25444223 its reverse (32244452), we get a palindrome (57688675).

The spelling of 25444223 in words is "twenty-five million, four hundred forty-four thousand, two hundred twenty-three".