25223345 has 16 divisors (see below), whose sum is σ = 34674048. Its totient is φ = 17255040.

The previous prime is 25223339. The next prime is 25223347. The reversal of 25223345 is 54332252.

It is not a de Polignac number, because 25223345 - 2⁴ = 25223329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25223347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26162 + ... + 27108.

It is an arithmetic number, because the mean of its divisors is an integer number (2167128).

Almost surely, 2^25223345 is an apocalyptic number.

It is an amenable number.

25223345 is a deficient number, since it is larger than the sum of its proper divisors (9450703).

25223345 is an equidigital number, since it uses as much as digits as its factorization.

25223345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720.

The product of its digits is 7200, while the sum is 26.

The square root of 25223345 is about 5022.2848385969. The cubic root of 25223345 is about 293.2699465596.

Adding to 25223345 its reverse (54332252), we get a palindrome (79555597).

The spelling of 25223345 in words is "twenty-five million, two hundred twenty-three thousand, three hundred forty-five".