25222993 has 2 divisors, whose sum is σ = 25222994. Its totient is φ = 25222992.

The previous prime is 25222991. The next prime is 25222999. The reversal of 25222993 is 39922252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19210689 + 6012304 = 4383^2 + 2452^2 .

It is a cyclic number.

It is not a de Polignac number, because 25222993 - 2¹ = 25222991 is a prime.

Together with 25222991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25222991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12611496 + 12611497.

It is an arithmetic number, because the mean of its divisors is an integer number (12611497).

Almost surely, 2^25222993 is an apocalyptic number.

It is an amenable number.

25222993 is a deficient number, since it is larger than the sum of its proper divisors (1).

25222993 is an equidigital number, since it uses as much as digits as its factorization.

25222993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 25222993 is about 5022.2497946637. The cubic root of 25222993 is about 293.2685823274.

The spelling of 25222993 in words is "twenty-five million, two hundred twenty-two thousand, nine hundred ninety-three".