25142223 has 4 divisors (see below), whose sum is σ = 33522968. Its totient is φ = 16761480.

The previous prime is 25142213. The next prime is 25142239. The reversal of 25142223 is 32224152.

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

It is not a de Polignac number, because 25142223 - 2⁴ = 25142207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25142223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25142213) 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, 4190368 + ... + 4190373.

It is an arithmetic number, because the mean of its divisors is an integer number (8380742).

Almost surely, 2^25142223 is an apocalyptic number.

25142223 is a deficient number, since it is larger than the sum of its proper divisors (8380745).

25142223 is an equidigital number, since it uses as much as digits as its factorization.

25142223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8380744.

The product of its digits is 960, while the sum is 21.

The square root of 25142223 is about 5014.2021299505. The cubic root of 25142223 is about 292.9552090943.

Adding to 25142223 its reverse (32224152), we get a palindrome (57366375).

The spelling of 25142223 in words is "twenty-five million, one hundred forty-two thousand, two hundred twenty-three".