25572769 has 2 divisors, whose sum is σ = 25572770. Its totient is φ = 25572768.

The previous prime is 25572749. The next prime is 25572779. The reversal of 25572769 is 96727552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23882769 + 1690000 = 4887^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 25572769 - 2⁹ = 25572257 is a prime.

It is a super-2 number, since 2×25572769² = 1307933028654722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25572719) 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 as a sum of consecutive naturals, namely, 12786384 + 12786385.

It is an arithmetic number, because the mean of its divisors is an integer number (12786385).

Almost surely, 2^25572769 is an apocalyptic number.

It is an amenable number.

25572769 is a deficient number, since it is larger than the sum of its proper divisors (1).

25572769 is an equidigital number, since it uses as much as digits as its factorization.

25572769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 43.

The square root of 25572769 is about 5056.9525408095. The cubic root of 25572769 is about 294.6179829608.

The spelling of 25572769 in words is "twenty-five million, five hundred seventy-two thousand, seven hundred sixty-nine".