25142224 has 20 divisors (see below), whose sum is σ = 49332160. Its totient is φ = 12411360.

The previous prime is 25142213. The next prime is 25142239. The reversal of 25142224 is 42224152.

It is a junction number, because it is equal to n+sod(n) for n = 25142195 and 25142204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8682 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (2466608).

Almost surely, 2^25142224 is an apocalyptic number.

It is an amenable number.

25142224 is a deficient number, since it is larger than the sum of its proper divisors (24189936).

25142224 is a wasteful number, since it uses less digits than its factorization.

25142224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19978 (or 19972 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 25142224 is about 5014.2022296672. The cubic root of 25142224 is about 292.9552129783.

Adding to 25142224 its reverse (42224152), we get a palindrome (67366376).

The spelling of 25142224 in words is "twenty-five million, one hundred forty-two thousand, two hundred twenty-four".