22725429 has 8 divisors (see below), whose sum is σ = 30367872. Its totient is φ = 15116640.

The previous prime is 22725421. The next prime is 22725431. The reversal of 22725429 is 92452722.

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

It is not a de Polignac number, because 22725429 - 2³ = 22725421 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22725429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22725421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6792 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (3795984).

Almost surely, 2^22725429 is an apocalyptic number.

It is an amenable number.

22725429 is a deficient number, since it is larger than the sum of its proper divisors (7642443).

22725429 is a wasteful number, since it uses less digits than its factorization.

22725429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16827.

The product of its digits is 20160, while the sum is 33.

The square root of 22725429 is about 4767.1195705583. The cubic root of 22725429 is about 283.2505075857.

The spelling of 22725429 in words is "twenty-two million, seven hundred twenty-five thousand, four hundred twenty-nine".