25224142 has 16 divisors (see below), whose sum is σ = 40406400. Its totient is φ = 11783520.

The previous prime is 25224139. The next prime is 25224149. The reversal of 25224142 is 24142252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25224149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5217 + ... + 8812.

It is an arithmetic number, because the mean of its divisors is an integer number (2525400).

Almost surely, 2^25224142 is an apocalyptic number.

25224142 is a deficient number, since it is larger than the sum of its proper divisors (15182258).

25224142 is a wasteful number, since it uses less digits than its factorization.

25224142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14091.

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

The square root of 25224142 is about 5022.3641843259. The cubic root of 25224142 is about 293.2730354136.

Adding to 25224142 its reverse (24142252), we get a palindrome (49366394).

The spelling of 25224142 in words is "twenty-five million, two hundred twenty-four thousand, one hundred forty-two".