125086438249 has 2 divisors, whose sum is σ = 125086438250. Its totient is φ = 125086438248.

The previous prime is 125086438247. The next prime is 125086438271. The reversal of 125086438249 is 942834680521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71586748249 + 53499690000 = 267557^2 + 231300^2 .

It is an emirp because it is prime and its reverse (942834680521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125086438249 - 2¹ = 125086438247 is a prime.

Together with 125086438247, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 125086438196 and 125086438205.

It is not a weakly prime, because it can be changed into another prime (125086438241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62543219124 + 62543219125.

It is an arithmetic number, because the mean of its divisors is an integer number (62543219125).

Almost surely, 2^125086438249 is an apocalyptic number.

It is an amenable number.

125086438249 is a deficient number, since it is larger than the sum of its proper divisors (1).

125086438249 is an equidigital number, since it uses as much as digits as its factorization.

125086438249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 125086438249 in words is "one hundred twenty-five billion, eighty-six million, four hundred thirty-eight thousand, two hundred forty-nine".