125774749 has 2 divisors, whose sum is σ = 125774750. Its totient is φ = 125774748.

The previous prime is 125774731. The next prime is 125774771. The reversal of 125774749 is 947477521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118962649 + 6812100 = 10907^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 125774749 - 2⁵ = 125774717 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125774699 and 125774708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125774849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62887374 + 62887375.

It is an arithmetic number, because the mean of its divisors is an integer number (62887375).

Almost surely, 2^125774749 is an apocalyptic number.

It is an amenable number.

125774749 is a deficient number, since it is larger than the sum of its proper divisors (1).

125774749 is an equidigital number, since it uses as much as digits as its factorization.

125774749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 46.

The square root of 125774749 is about 11214.9341950811. The cubic root of 125774749 is about 501.0308718126.

The spelling of 125774749 in words is "one hundred twenty-five million, seven hundred seventy-four thousand, seven hundred forty-nine".