22725057 has 4 divisors (see below), whose sum is σ = 30300080. Its totient is φ = 15150036.

The previous prime is 22725023. The next prime is 22725097. The reversal of 22725057 is 75052722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22725057 - 2⁷ = 22724929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22725097) by changing a digit.

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, 3787507 + ... + 3787512.

It is an arithmetic number, because the mean of its divisors is an integer number (7575020).

Almost surely, 2^22725057 is an apocalyptic number.

It is an amenable number.

22725057 is a deficient number, since it is larger than the sum of its proper divisors (7575023).

22725057 is an equidigital number, since it uses as much as digits as its factorization.

22725057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575022.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 22725057 is about 4767.0805531268. The cubic root of 22725057 is about 283.2489620371.

Adding to 22725057 its reverse (75052722), we get a palindrome (97777779).

The spelling of 22725057 in words is "twenty-two million, seven hundred twenty-five thousand, fifty-seven".