22585457 has 2 divisors, whose sum is σ = 22585458. Its totient is φ = 22585456.

The previous prime is 22585447. The next prime is 22585481. The reversal of 22585457 is 75458522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22572001 + 13456 = 4751^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 22585457 - 2¹⁸ = 22323313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22585457.

It is not a weakly prime, because it can be changed into another prime (22585447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11292728 + 11292729.

It is an arithmetic number, because the mean of its divisors is an integer number (11292729).

Almost surely, 2^22585457 is an apocalyptic number.

It is an amenable number.

22585457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22585457 is an equidigital number, since it uses as much as digits as its factorization.

22585457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112000, while the sum is 38.

The square root of 22585457 is about 4752.4159119336. The cubic root of 22585457 is about 282.6677709687.

The spelling of 22585457 in words is "twenty-two million, five hundred eighty-five thousand, four hundred fifty-seven".