25379038849 has 2 divisors, whose sum is σ = 25379038850. Its totient is φ = 25379038848.

The previous prime is 25379038823. The next prime is 25379038877. The reversal of 25379038849 is 94883097352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23967684225 + 1411354624 = 154815^2 + 37568^2 .

It is a cyclic number.

It is not a de Polignac number, because 25379038849 - 2²¹ = 25376941697 is a prime.

It is a super-2 number, since 2×25379038849² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25379038793 and 25379038802.

It is not a weakly prime, because it can be changed into another prime (25379038819) 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, 12689519424 + 12689519425.

It is an arithmetic number, because the mean of its divisors is an integer number (12689519425).

Almost surely, 2^25379038849 is an apocalyptic number.

It is an amenable number.

25379038849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25379038849 is an equidigital number, since it uses as much as digits as its factorization.

25379038849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 25379038849 in words is "twenty-five billion, three hundred seventy-nine million, thirty-eight thousand, eight hundred forty-nine".