25003078249 has 2 divisors, whose sum is σ = 25003078250. Its totient is φ = 25003078248.

The previous prime is 25003078237. The next prime is 25003078273. The reversal of 25003078249 is 94287030052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24859198224 + 143880025 = 157668^2 + 11995^2 .

It is a cyclic number.

It is not a de Polignac number, because 25003078249 - 2¹⁵ = 25003045481 is a prime.

It is not a weakly prime, because it can be changed into another prime (25003078649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12501539124 + 12501539125.

It is an arithmetic number, because the mean of its divisors is an integer number (12501539125).

Almost surely, 2^25003078249 is an apocalyptic number.

It is an amenable number.

25003078249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25003078249 is an equidigital number, since it uses as much as digits as its factorization.

25003078249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 25003078249 in words is "twenty-five billion, three million, seventy-eight thousand, two hundred forty-nine".