22125747 has 32 divisors (see below), whose sum is σ = 37048320. Its totient is φ = 11452320.

The previous prime is 22125743. The next prime is 22125799. The reversal of 22125747 is 74752122.

It is not a de Polignac number, because 22125747 - 2² = 22125743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22125743) 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 31 ways as a sum of consecutive naturals, for example, 7972 + ... + 10382.

It is an arithmetic number, because the mean of its divisors is an integer number (1157760).

Almost surely, 2^22125747 is an apocalyptic number.

22125747 is a deficient number, since it is larger than the sum of its proper divisors (14922573).

22125747 is a wasteful number, since it uses less digits than its factorization.

22125747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463.

The product of its digits is 7840, while the sum is 30.

The square root of 22125747 is about 4703.8013350906. The cubic root of 22125747 is about 280.7367798073.

Adding to 22125747 its reverse (74752122), we get a palindrome (96877869).

The spelling of 22125747 in words is "twenty-two million, one hundred twenty-five thousand, seven hundred forty-seven".