25189049 has 2 divisors, whose sum is σ = 25189050. Its totient is φ = 25189048.

The previous prime is 25189027. The next prime is 25189103. The reversal of 25189049 is 94098152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22629049 + 2560000 = 4757^2 + 1600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25189049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25189849) 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, 12594524 + 12594525.

It is an arithmetic number, because the mean of its divisors is an integer number (12594525).

Almost surely, 2^25189049 is an apocalyptic number.

It is an amenable number.

25189049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25189049 is an equidigital number, since it uses as much as digits as its factorization.

25189049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 25189049 is about 5018.8692949707. The cubic root of 25189049 is about 293.1369672618.

The spelling of 25189049 in words is "twenty-five million, one hundred eighty-nine thousand, forty-nine".