22025537 has 2 divisors, whose sum is σ = 22025538. Its totient is φ = 22025536.

The previous prime is 22025533. The next prime is 22025539. The reversal of 22025537 is 73552022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21893041 + 132496 = 4679^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 22025537 - 2² = 22025533 is a prime.

Together with 22025539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22025533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11012768 + 11012769.

It is an arithmetic number, because the mean of its divisors is an integer number (11012769).

Almost surely, 2^22025537 is an apocalyptic number.

It is an amenable number.

22025537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22025537 is an equidigital number, since it uses as much as digits as its factorization.

22025537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 22025537 is about 4693.1372236490. The cubic root of 22025537 is about 280.3123088377.

Adding to 22025537 its reverse (73552022), we get a palindrome (95577559).

The spelling of 22025537 in words is "twenty-two million, twenty-five thousand, five hundred thirty-seven".