25576249 has 2 divisors, whose sum is σ = 25576250. Its totient is φ = 25576248.

The previous prime is 25576247. The next prime is 25576267. The reversal of 25576249 is 94267552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25431849 + 144400 = 5043^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 25576249 - 2¹ = 25576247 is a prime.

Together with 25576247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25576247) 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, 12788124 + 12788125.

It is an arithmetic number, because the mean of its divisors is an integer number (12788125).

Almost surely, 2^25576249 is an apocalyptic number.

It is an amenable number.

25576249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25576249 is an equidigital number, since it uses as much as digits as its factorization.

25576249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 25576249 is about 5057.2966098500. The cubic root of 25576249 is about 294.6313464475.

The spelling of 25576249 in words is "twenty-five million, five hundred seventy-six thousand, two hundred forty-nine".