22725137 has 2 divisors, whose sum is σ = 22725138. Its totient is φ = 22725136.

The previous prime is 22725103. The next prime is 22725161. The reversal of 22725137 is 73152722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17230801 + 5494336 = 4151^2 + 2344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22725137 is a prime.

It is not a weakly prime, because it can be changed into another prime (22725167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11362568 + 11362569.

It is an arithmetic number, because the mean of its divisors is an integer number (11362569).

Almost surely, 2^22725137 is an apocalyptic number.

It is an amenable number.

22725137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22725137 is an equidigital number, since it uses as much as digits as its factorization.

22725137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 29.

The square root of 22725137 is about 4767.0889439993. The cubic root of 22725137 is about 283.2492944146.

Adding to 22725137 its reverse (73152722), we get a palindrome (95877859).

The spelling of 22725137 in words is "twenty-two million, seven hundred twenty-five thousand, one hundred thirty-seven".