22725142 has 8 divisors (see below), whose sum is σ = 37186632. Its totient is φ = 10329600.

The previous prime is 22725137. The next prime is 22725161. The reversal of 22725142 is 24152722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516459 + ... + 516502.

It is an arithmetic number, because the mean of its divisors is an integer number (4648329).

Almost surely, 2^22725142 is an apocalyptic number.

22725142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22725142 is a deficient number, since it is larger than the sum of its proper divisors (14461490).

22725142 is a wasteful number, since it uses less digits than its factorization.

22725142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032974.

The product of its digits is 2240, while the sum is 25.

The square root of 22725142 is about 4767.0894684283. The cubic root of 22725142 is about 283.2493151881.

Adding to 22725142 its reverse (24152722), we get a palindrome (46877864).

The spelling of 22725142 in words is "twenty-two million, seven hundred twenty-five thousand, one hundred forty-two".