125598749 has 2 divisors, whose sum is σ = 125598750. Its totient is φ = 125598748.

The previous prime is 125598713. The next prime is 125598769. The reversal of 125598749 is 947895521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120340900 + 5257849 = 10970^2 + 2293^2 .

It is a cyclic number.

It is not a de Polignac number, because 125598749 - 2¹² = 125594653 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125598697 and 125598706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125598769) 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, 62799374 + 62799375.

It is an arithmetic number, because the mean of its divisors is an integer number (62799375).

Almost surely, 2^125598749 is an apocalyptic number.

It is an amenable number.

125598749 is a deficient number, since it is larger than the sum of its proper divisors (1).

125598749 is an equidigital number, since it uses as much as digits as its factorization.

125598749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 50.

The square root of 125598749 is about 11207.0847681277. The cubic root of 125598749 is about 500.7970607133.

The spelling of 125598749 in words is "one hundred twenty-five million, five hundred ninety-eight thousand, seven hundred forty-nine".