5125109749 has 2 divisors, whose sum is σ = 5125109750. Its totient is φ = 5125109748.

The previous prime is 5125109747. The next prime is 5125109777. The reversal of 5125109749 is 9479015215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2790480625 + 2334629124 = 52825^2 + 48318^2 .

It is a cyclic number.

It is not a de Polignac number, because 5125109749 - 2¹ = 5125109747 is a prime.

Together with 5125109747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5125109747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2562554874 + 2562554875.

It is an arithmetic number, because the mean of its divisors is an integer number (2562554875).

Almost surely, 2^5125109749 is an apocalyptic number.

It is an amenable number.

5125109749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5125109749 is an equidigital number, since it uses as much as digits as its factorization.

5125109749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 5125109749 is about 71589.8718325435. The cubic root of 5125109749 is about 1724.1209270432.

The spelling of 5125109749 in words is "five billion, one hundred twenty-five million, one hundred nine thousand, seven hundred forty-nine".