25019797076249 has 2 divisors, whose sum is σ = 25019797076250. Its totient is φ = 25019797076248.

The previous prime is 25019797076201. The next prime is 25019797076291. The reversal of 25019797076249 is 94267079791052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21404798347024 + 3614998729225 = 4626532^2 + 1901315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25019797076249 is a prime.

It is not a weakly prime, because it can be changed into another prime (25019797076299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12509898538124 + 12509898538125.

It is an arithmetic number, because the mean of its divisors is an integer number (12509898538125).

Almost surely, 2^{25019797076249} is an apocalyptic number.

It is an amenable number.

25019797076249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25019797076249 is an equidigital number, since it uses as much as digits as its factorization.

25019797076249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120022560, while the sum is 68.

The spelling of 25019797076249 in words is "twenty-five trillion, nineteen billion, seven hundred ninety-seven million, seventy-six thousand, two hundred forty-nine".